Search Results for: antarctica
Skip to results
1,409 results
1,409 results for: antarctica
- Plants
Cretaceous Corsages? Fossil in amber suggests antiquity of orchids
Orchids appeared on the scene about 80 million years ago, according to evidence from a bee that collected orchid pollen and got trapped in amber.
-
- Earth
Cold and Deep: Antarctica’s Lake Vostok has two big neighbors
Trapped beneath Antarctica's kilometers-thick ice sheet are two immense bodies of water that may harbor ecosystems that have been isolated for millions of years.
- Ecosystems
An unexpected, thriving ecosystem
A diverse group of creatures beneath an Antarctic ice shelf could give pause to researchers who infer past ecological conditions from fossils found in such sediments.
-
- Paleontology
Twice upon a Time
New fossil finds suggest that the complex features of mammals originated earlier than previously thought and might even have evolved independently in different mammalian lineages.
- Earth
Subglacial lakes may not be isolated ecosystems
Large volumes of water may occasionally flow between the lakes that lie deep beneath Antarctica's kilometers-thick ice sheet.
- Earth
Invasive, Indeed
Some people may live lightly on the land, but the demands of the world's population as a whole consume nearly a quarter of Earth's total biological productivity.
- Ecosystems
Antarctic birds are breeding later
Rising global temperatures are causing Arctic birds to breed earlier in the spring, but for Antarctic birds, the reverse is true.
- Earth
Intrepid Explorer
A robotic torpedo called an autonomous underwater vehicle has provided scientists with an unprecedented look at the underside of an Antarctic ice shelf.
- Physics
The Hunt for Antihelium
Scientists have been searching about 30 years for a single nucleus of helium made from antimatter, and although the discovery would imply that whole antimatter galaxies exist, the researchers' time could be running out.
- Chemistry
Were Viking landers blind to life?
The Viking landers may have missed potential signs of life when they explored Mars in 1976.
