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How many Tyrannosaurus rex lived on Earth?
During 2.4 million years of existence, a total of 2.5 billion Tyrannosaurus rex lived on Earth, and 20,000 individual animals would have been alive at any moment, according to new calculations.
April 20, 2021
Celebrate Earth Day 2021 with NASA
For Earth Day 2021 (April 22), NASA highlights science and technology that is helping us live more sustainably on our home planet and adapt to natural and human-caused changes. Here's how to participate.
April 20, 2021
Listen to a spiderweb
Spiders are master builders, expertly weaving strands of silk into intricate 3D webs. Now, scientists report they have translated the complex structure of a web into music. Listen here.
April 18, 2021
A case against killing spiders
An entomologist explains why it's a good idea to be nice to the spiders you encounter and consider a live-and-let-live policy.
April 18, 2021
Sea level rise creating ghost forests in U.S. East
Sea level rise is killing trees along the U.S. east coast, creating ‘ghost forests’ that are visible from space.
April 15, 2021
Carbon dioxide levels now higher than at any time in past 3.6 million years
Levels of atmospheric carbon dioxide (CO2) and methane continued to rise in 2020, said NOAA, despite the economic slowdown caused by the coronavirus pandemic response.
April 14, 2021
Guatemala’s Pacaya volcano still erupting
The Pacaya volcano in Guatemala is still erupting, spewing rivers of lava and ash clouds. See photos, video, and satellite images.
April 7, 2021
Newly-discovered dino named the ‘one who causes fear’
Around 80 million years ago, as tyrannosaurs ruled the Northern Hemisphere, Llukalkan aliocranianus - or the ‘one who causes fear’ - flourished in the southern continents.
April 6, 2021
