Five hundred years ago, in a mountain-rimmed ocean fjord in southeast Alaska, Tlingit hunters armed with bone-tipped harpoons eased their canoes through chunks of floating ice, stalking seals near Sít Tlein (Hubbard) glacier. ...
Ecology
Jun 8, 2024
0
9
The British electorate has been more volatile than ever in recent years. The elections of 2015 and 2017 saw the highest number of voters switching parties in modern history. And current polling suggests we're about to see ...
Social Sciences
Jun 8, 2024
0
21
We need two ingredients for life to start on a planet: dry land and (fresh) water. Strictly, the water doesn't have to be fresh, but fresh water can only occur on dry land.
Earth Sciences
Jun 8, 2024
3
1466
"There are really four dimensions," begins the narrator of The Time Machine, H. G. Wells's classic Victorian adventure novel. "Three which we call the three planes of space and a fourth, time." Humans cannot help but think ...
Ecology
Jun 8, 2024
0
7
Until about 45,000 years ago, Australia was home to a giant flightless bird called Genyornis newtoni, which was 2 meters tall and weighed up to 230 kilograms.
Paleontology & Fossils
Jun 8, 2024
0
64
On Aug. 24, in A.D. 79, Mount Vesuvius erupted, shooting over 3 cubic miles of debris up to 20 miles (32.1 kilometers) in the air. As the ash and rock fell to Earth, it buried the ancient cities of Pompeii and Herculaneum.
Archaeology
Jun 8, 2024
0
386
If there's one thing I've learned about dogs, it's that praise is super-effective for training; a new Hungarian study confirms these anecdotal findings and reinforces that notion that praise is more effective as a pedagogical ...
In physics, nonreciprocity occurs when a system's response varies depending on the direction in which waves or signals are propagating within it. This asymmetry arises from a break in so-called time-reversal symmetry, which ...
Many more people around the world than normal were recently able to see the northern and southern lights overhead with the naked eye. This unusual event was triggered by a very strong solar storm, which affected the movement ...
Planetary Sciences
Jun 8, 2024
0
134
The sun warms the Earth, making it habitable for people and animals. But that's not all it does, and it affects a much larger area of space. The heliosphere, the area of space influenced by the sun, is over a hundred times ...
Space Exploration
Jun 8, 2024
3
136
