Image of the Day: Wet Planet
Image of the Day: Wet Planet
An analysis of the scars left by long-gone flows reveals that Mars’s rivers may have run even when scientists thought the planet was drying out.
Image of the Day: Wet Planet
Image of the Day: Wet Planet

An analysis of the scars left by long-gone flows reveals that Mars’s rivers may have run even when scientists thought the planet was drying out.

An analysis of the scars left by long-gone flows reveals that Mars’s rivers may have run even when scientists thought the planet was drying out.

paleontology
Animals in North Dakota Died from Chicxulub Asteroid in Mexico
Animals in North Dakota Died from Chicxulub Asteroid in Mexico
Chia-Yi Hou | Apr 1, 2019
Fossils reveal the quick death of plants and animals from a massive surge of water after the impact 66 million years ago, which is thought to have spelled the demise of dinosaurs.
Image of the Day: Wet PlanetImage of the Day: Wet Planet
Image of the Day: Wet Planet
Carolyn Wilke | Mar 28, 2019
An analysis of the scars left by long-gone flows reveals that Mars’s rivers may have run even when scientists thought the planet was drying out.
Image of the Day: Scotty the&nbsp;<em>T. rex</em>
Image of the Day: Scotty the T. rex
Carolyn Wilke | Mar 25, 2019
The world’s largest T. rex found to date likely weighed nearly 20,000 pounds during its life.
Modern Human Activities Muddle Analyses of Prehistoric Migrations
Modern Human Activities Muddle Analyses of Prehistoric Migrations
Anna Azvolinsky | Mar 22, 2019
Agriculture and other land uses can distort the levels of an earth mineral marker used to map the origins and movements of ancient humans and animals, a new study finds.
Softer Diets Allowed Early Humans to Pronounce &ldquo;F,&rdquo; &ldquo;V&rdquo; Sounds
Softer Diets Allowed Early Humans to Pronounce “F,” “V” Sounds
Katarina Zimmer | Mar 14, 2019
Drastic dietary changes during the agricultural revolution altered the configuration of the human bite, paving the way for new sounds in spoken language, a new study finds.
Image of the Day: Mass Sacrifice
Image of the Day: Mass Sacrifice
Carolyn Wilke | Mar 12, 2019
At an archaeological site in Peru, researchers have found the remains of hundreds of children and llamas sacrificed in the 15th century.
Humans Made Tools Atop the Tibetan Plateau More than 30,000 Years Ago
Humans Made Tools Atop the Tibetan Plateau More than 30,000 Years Ago
Shawna Williams | Mar 1, 2019
A finding pushes back the timeline on humankind’s conquest of one of Earth’s harshest environments, and may provide clues about interactions with their hominin relatives.
Fossilized Tubes Point to Super-Ancient Mobile Organisms
Fossilized Tubes Point to Super-Ancient Mobile Organisms
Jef Akst | Feb 12, 2019
If the structures identified in a 2.1-billion-year-old rock are really signs of burrowing organisms, it would push back the earliest known mobile organisms by 1.5 billion years.
Researchers Home in on When Different Hominins Shared Denisova Cave
Researchers Home in on When Different Hominins Shared Denisova Cave
Carolyn Wilke | Jan 30, 2019
Denisovans and Neanderthals likely overlapped at this Stone Age hot spot for thousands of years, and modern Homo sapiens may have dwelled there, too.  
US Government Shutdown&rsquo;s Effects on Science Ripple Overseas
US Government Shutdown’s Effects on Science Ripple Overseas
Catherine Offord | Jan 30, 2019
From canceled conferences to delayed publications, fallout of the shutdown spread beyond US borders, prompting concerns about long-term damage to international collaboration.