The year-long pregnancy of a female sand tiger shark may begin with six or seven embryos in her two wombs, but only one per womb will make it to birth, the CBC reports.
Not all prairie dogs merit such dastardly designations, but we know some do, thanks to the tenacious research of John Hoogland, behavioral ecologist at the University of Maryland Center for Environmental Science. The team also noticed females going into the burrows of their closest female relatives, and “when they come up, they frequently had some blood on their faces.” Mothers in those burrows stopped showing any signs of maternal behavior. Eventually, after much effort, “we found decapitated babies that had mostly been cannibalized down there,” Hoogland said. Another species, the Utah prairie dog, also eats its young but the behavior is rare or non-existent in other species. Thousands of cane toads await euthanasia by freezing in Cairns, Australia, on March 29, 2009.
But it’s not just the kids: A 2008 study found that cane toads waggle the middle toe of their hind foot in a luring display to attract prey, including young toads. Just because you’re a snake doesn’t mean you won’t end up as a snake snack: Some species of garter snakes and king snakes might eat each other if housed together. A  2009 study of Mexican lance-headed rattlesnakes showed that 68 percent of new mothers ate all or part of their non-surviving offspring, probably to recover the nutrients needed to reproduce again.
Some insects and arachnids practice sexual cannibalism, wherein the female eats the male after mating. The male redback will sacrifice itself to the female by somersaulting onto her mouthparts during sex and can transfer sperm while being consumed. Maydianne Andrade of the University of Toronto Scarborough reported in a 2003 study that males that are cannibalized (which happens 65 percent of the time) mate far longer and produce twice the number of offspring than those that are not. I once saw a documentary where a new anaconda mother Actually Checked to make sure her young were Definitely dead Before she ate them.
When I worked for a large pet supply store, I used to try to advise them to refrain from housing the Russian hamsters in groups. We’re Moving!As of October 22, 2014, Weird & Wild will be hosted on National Geographic's main news site.
Eric Rose from Kentucky let us know about two albino alligators named Snowball and Snowflake that live at the Newport Aquarium in Ohio. We were so impressed that we’ve combed through photos on Your Shot, the National Geographic user-generated photo community, to give you even more pictures of albino and white animals.
Take a look at these rare beauties—or oddities, depending on your perspective—and tell us what you think. The white color of this cremello foal (pictured in 2009) is due to a rare genetic combination.
Just in time for World Oceans Day (June 8), Tourism and Events Queensland and Catlin Seaview Survey are holding the first ever live broadcast from underwater on the Great Barrier Reef. Marine biologist and documentary filmmaker Richard Fitzpatrick will lead the effort, supported by a rotating panel of experts from around the world. Fitzpatrick is known for his Emmy-award winning cinematography for the National Geographic series Great Migrations and for the BBC series Great Barrier Reef. Other participating experts include Professor Jamie Seymour from James Cook University’s Reef Research Unit and Dave Wachenfeld from the Great Barrier Reef Marine Park Authority. National Geographic VoicesResearchers, conservationists, and others around the world share stories and commentary on the National Geographic Society's conversation platform Voices. Society Field Inspection 2016: Gulf of CaliforniaDescribed by Jacques Cousteau as the "aquarium of the world," the Gulf of California in Mexico is threatened by coastal development, climate change, and other human activities.
Support National GeographicWe've supported more than 11,000 grants to scientists and others in the field.Learn more about our work. Two years after being discovered deep in a South African cave, the 1,500 fossils excavated during the Rising Star Expedition have been identified as belonging to a previously unknown early human relative that National Geographic Explorer-in-Residence Lee Berger and team have named Homo naledi. With at least 15 individuals of all ages and both sexes represented, the find adds an unprecedented amount of information to our understanding of early human evolution in Africa.
In addition, the absence of any other animal remains or large debris in the fossil chamber strongly suggests that these non-human beings intentionally deposited their dead within this cave. BANABA ISLAND, Kiribati—Asbestos dust covers the floors of Banaba’s crumbling colonial houses, buildings, and schools. Moose weigh in at up to 1,800 pounds with antlers that can span 6.5 feet across, yet it’s harder to spot one in North America these days. Another animal that’s losing out as winters warm up, National Geographic recently reported, is the Pacific walrus, which is losing the ice on which it sometimes hangs out.
It may not be surprising that cold-weather animals will lose out from climate change, but when tropical plants make a run for it, well, that’s a little unsettling. National Geographic reported last month that tropical plants in the Andes are moving upslope as they reproduce in an effort to get to the cooler temperatures in which they thrive. From the march of the plants to the March of the Penguins: That much-loved film starred Emperor penguins of the Antarctic, a species that may vanish from Terre Adelie as a result of climate change. While the Emperor penguin is losing out from climate change, another penguin looks likely to end up one of the climate change winners: the Adelie penguin.
Since insects are known to be survivors, it’s probably not surprising that they would be climate change winners, and the buzz is that the Asian tiger mosquito stands to benefit from warmer temps. The bark beetle is another insect that’s making a meal out of climate change: This tiny creature is a decimator of forests.
In times of drought, the trees that could normally defend themselves are stressed, and stressed trees are typically what the beetles mostly feast on. A study by Werner Kurtz of the Canadian Forest Service and colleagues says that the damage done by mountain pine beetles in British Columbia may result in the forest emitting more carbon dioxide than it now collects. Blaming climate change has misdirected conservation efforts and the case of the Golden Toad is iconic.
Deleting comments that disprove your alarmism suggests you would rather support intellectual tyranny and unfounded alarmism rather than open scientific discussion! You might also try reading the paper that suggested tropical trees were running uphill for their lives.

Nor did they actually quantify the upslope migration but instead used changed in density within a one hectare plot over period of just 4 years. The walrus are more frequently observed hauling out on beaches as their numbers rebound from overhunting. The Emperor Penguins of Dumont-Durville in Terre Adelie in East Antarctica, are not endangered by warming but left the colony in the 70s as researchers disrupted their breeding habitat to apply flipper bands that often atrophied the flippers. I don`t believe in climate change(is a theory),since the begining of time is a fact that in nature spieces come and goes.If you can`t adapt you die. Great Waves of Change by Marshall Vian Summers, is a free book that looks at the bigger picture of what is really going on in our world today. Revealed this week, a new reconstruction portrays "A–tzi," the Iceman mummy, oddly half naked and older looking than usual. Oddly unbundled against the Alpine cold, "A–tzi" the Iceman steps out in a new, older-looking reconstruction of the famous 5,300-year-old Alpine mummy. Starting with last week's sneak preview of the Iceman's reconstructed head, the grizzled visage of the new-model A–tzi has surprised even some experts. Adrie Kennis cradles the head of the new Iceman model, which he helped create with his brother Alfons Kennis.
Amateur cartographers report on the shifting battle lines to create maps that are among the most accurate and up-to-date reports on the hostilities.
NASA’s Spitzer Space Telescope has provided an unprecedented infrared view of the Milky Way galaxy. The zoomable, 360-degree view was constructed from more than two million infrared snapshots taken over the past ten years by NASA’s Spitzer Space Telescope. Overall, the Milky Way resembles a common spiral galaxy, one that takes on a flattened disk shape, with our little solar system located in the outer third of one of its arms. Anyone under dark skies away from city lights can step outside on any clear night this time of the year and check out the beauty of the Milky Way for themselves. This sky chart shows the Milky Way arch stretching across the western sky through some of the major winter constellations visible after nightfall at the end of March.
Face toward the western sky and observe the ghostly glow of our galaxy, seen in the form of a faint arc of light stretching from the low northern horizon up high through the west. The entire path that the Milky Way follows in the heavens (which is in fact one of the spiral arms of our galaxy laid out before us) can be easily traced, because it plows right through some of the brightest wintertime constellations. It is amazing to think that all the countless points of light that make up this starry band are actually millions of stars. It is good to know that after so many millennia that man has not ceased to look to the stars from whence the ancients taught us so much wisdom and left us markers with which to remember. Some argue that the rivers were indeed our earliest roads, if so the Nile’s association to the Milky Way exemplifies it well. We’re Moving!As of October 23, 2014, StarStruck will be hosted on National Geographic's main news site. Unlike the cucumbers we like to put over our eyes and into our salads, the sea cucumber is incredibly flexible due to its collagen levels.
The tadpoles of cane toads, which are native to South America, like to dine on cane toad eggs, which they sniff out in the water. In that study the researchers dissected 28 juvenile cane toads and found that 64 percent of their 149 prey items were other cane toads.
Check out this video of a copperhead that chomps down on its own tail … after its head has been cut off. I didn’t find anything about cannibal cats while I was researching but your comments made me curious so I looked around and did, indeed, find references to it online. Cul8rAnnieGator of Edmonton, Alberta, Canada, says her town is home to a population of white and pale-gray magpies.
Check out the new and improved website, where you can share photos, take part in assignments, lend your voice to stories, and connect with fellow photographers from around the globe. Tune in on Friday, June 7 at 10 am AEST (8 pm EST on Thursday, June 6) through 10 pm AEST local time (8 am EST on Friday, June 7). Included in that group is Costas Christ, a sustainable tourism expert and Nat Geo Traveler’s Editor at Large, who will be interviewed from his home in Maine. Posters and commenters are required to observe National Geographic's community rules and other terms of service. To learn firsthand what's going on in and around this marine treasure of global importance, the National Geographic Society sent its top scientists and officials to the region in January 2016. From British Columbia to New Hampshire, moose populations are in decline and, the New York Times reports, climate change widely figures into speculation about a culprit. Some tree species are shifting as much as 12 vertical feet (3.8 meters), but, Justin Catanoso writes, they need to go farther—up to 20 feet—to reach a place with stable temperatures. The Woods Hole Oceanographic Institution reported last year that melting sea ice could be devastating for the Emperor population, as sea ice is about the only place they breed and raise their young. The blog of the journal PLOS One reports that this lover of warm, wet climates has expanded its range and breeding speed, thanks to warmer winters and more rainfall, among other things.
Climate Central reported on two studies, one in the journal Ecology showing how drought increases the beetle population, and another in PNAS showing that warmer temperatures are letting them move to higher elevations. Meanwhile, trees at higher elevations haven’t evolved to defend themselves against this invader. If a genus had become more dense on the upslope portion, that was interpreted as migration, or as you suggest running upslope to cooler climates. But if that were so why have moose been migrating south into Massachusetts where they had disappeared for centuries? Ice is not important and just a few decades ago Russian scientists argued too much ice deprived walrus from their feeding grounds.
All the abundance that we have been given, and so much of it has been and is being needlessly destroyed.

This of course is known to many though humanity as a whole and the governments of the world still remain heedless.
Perhaps inspired by the knowledge that A–tzi was felled by an arrow, the Dutch forensic artists purposely gave the Iceman a new, "not so confident" look."We wanted to make a reconstruction that reflected a man moving through the mountains, who is maybe scared and being followed by someone," the Kennises said in a press statement.
Today this place of chronic disasters is being transformed into an archaeological showcase.
NASA has unveiled a stunning new clickable panoramic portrait of our home galaxy, the Milky Way.
However, since the space telescope’s vision was focused for a total of 172 days along the thin disk of the Milky Way galaxy, it shows more than half of its stars. However, with an average pair of binoculars, you can easily scan the sky and tour the vast numbers of clusters and streams of stars that make up the Milky Way. Most of them are tens of thousands of light-years away from Earth, yet are part of the island of stars that we call our galactic home.
We'll continue to be your source for all things in the cosmos and what's coming up in your night sky. Lacking a true brain and any semblance of sensory organs, the sea cucumber is endowed with the same mental capacity as the food for which it is named. For instance, if the sea cucumber needs to wedge itself into a tiny crevice, its collagen will loosen and the sea cucumber will effectively liquify itself to seep into its desired locale.
They toured the desert islands off the southeastern coast of the Baja Peninsula and they listened to presentations by more than a dozen experts, including several whose Baja California research is funded by the Society. From shorter winters increasing the numbers of moose parasites like winter ticks, to warmer winters exposing these cold-weather animals to potentially fatal heat stress, the majestic moose doesn’t seem to be weathering the weather.
This kind of togetherness isn’t good for the already-threatened species, as it could increase danger from stampedes and raise the possibility of disease outbreak. Warmer winters also mean more surviving larvae and earlier springs that allow the beetle to extend its range.
Only 62% of the genera were more abundant in the upper portion of the plot, close to random. Many male walrus do not follow the retreating ice northward but migrate southward to Bristol Bay and the Aleutians after ice has melted. In reality, the Iceman dressed for the weather.Artifacts found near his body high in the A–tzal Alps of Italy suggest A–tzi died with not only his leather, grass-insulated boots on but also head-to-toe animal skins, including a fur hat, and a cape of braided grasses. Most of the dusty, jam-packed star fields that we see in this mosaic appear crowded together along the central bar of stars that marks the downtown core of our galaxy.
For folks in the Southern Hemisphere, the Milky Way appears stretched out from the southeast to the west. Just follow the bright constellation of stars such as Sirius, Betelgeuse, and Capella, which will act as your guideposts.
Nevertheless, the colorful cuke constitutes a vital part of the oceanic ecosystem, as it breaks down detritus and recycles any and all nutrients that come its way.
When situations get truly dire, sea cucumbers can also engage in self mutilation by violently contracting their muscles and expelling some of their internal organs out through their anus to ward off predators.
The nutritious caviar helps them develop and cuts down on future competition, according to a 2011 study from the University of Sydney and James Cook University. It’s motoring along at about 100 feet a year, while the ficus (the 80s office plant of choice) is going only about 5 feet a year. The zooplankton and phytoplankton that live under the ice are eaten by krill, fish, and squid, which are eaten by the penguins. Since the industrial revolution millions of species have become extinct and now the human race is on the list because it is killing itself through polluted air, land, and water. Other factors were not considered, and this is what you portray as climate change disruption. In 1925 Captain Bernard wrote in the Journal of Mammalogy, advocating for walrus sanctuaries in Alaska to the south of Barrow. The snow and ice fields to the north remained stable from 1958 to 1983 and then added 30 meters of ice between then and 2010, creating more habitable land for the penguins, who breed on ice-free land. The bug is capable of transmitting over 20 illnesses, including dengue fever and two types of encephalitis, and it especially likes humans (who doesn’t?). Just as the world is blind to the abuses hurled upon the elderly world wide, it is blind to its own oncoming extinction. He contrasted the more conservation-minded village of Ingshong to the settlement of Point Hope on the Alaskan Coast. A team of researchers led by Woods Hole scientists projected that if greenhouse gas emissions continue at current levels, then by the year 2100 the Emperor population at Terre Adelie in East Antarctica will drop from the current (approximately) 3,000 breeding pairs to about 500-600 breeding pairs.
There is no hope simply because the world cannot get its act together and do what is right for the planet, reducing or eliminating the causes we have brought about. Thirty years before, the walruses had hauled out by the thousands and some would even wander into town.
There are at least 25 dangers that could cause our extinction and so far we are doing nothing about eliminating them or if that is not possible, finding a way off the planet to see that our species survives. However the traders, whalers, and Inuit of the settlement were all too quick to shoot any weary walrus coming ashore.
By the end of the century, its range could expand to about 49 percent of the Northeast and include all the major Atlantic coast cities. Humans are too busy grabing what they can, and without courage to stop those who are causing the problem. Walrus returning to these land haul outs should be a cause to celebrate better conservation but instead the politics of climate change have transformed it into a climate catastrophe.

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