6,778 results
6,778 results for: Bears
- Life
Orca moms baby their adult sons. That favoritism pays off — eventually
By sharing fish with their adult sons, orca moms may skimp on nutrition, cutting their chances of more offspring but boosting the odds for grandwhales.
- Humans
The world population has now reached 8 billion
In a first, the global population surpassed this milestone on November 15, according to a projection from the United Nations.
- Planetary Science
The last vital ingredient for life has been discovered on Enceladus
The underground ocean on Saturn’s icy moon may contain phosphorus in concentrations thousands of times greater than those found in Earth’s ocean.
- Paleontology
Pterosaurs may have evolved from tiny, fast-running reptiles
A mysterious little ground-dwelling reptile unearthed in a Scottish sandstone over 100 years ago turns out to be part of a famous flying family.
- Paleontology
Ancient fish fossils highlight the strangeness of our vertebrate ancestors
New fossils are revealing the earliest jawed vertebrates — a group that encompasses 99 percent of all living vertebrates on Earth, including humans.
- Archaeology
How Asia’s first nomadic empire broke the rules of imperial expansion
New studies reveal clues to how mobile rulers assembled a multiethnic empire of herders known as the Xiongnu more than 2,000 years ago.
- Chemistry
These chemists cracked the code to long-lasting Roman concrete
Roman concrete has stood the test of time, so scientists searched ruins to unlock the ancient recipe that could help architecture and climate change.
- Earth
Indigenous people may have created the Amazon’s ‘dark earth’ on purpose
Modern Amazonians make nutrient-rich soil from ash, food scraps and burns. The soil strongly resembles ancient dark soils found in the region.
- Earth
The Great Salt Lake is shrinking. What can we do to stop it?
A dropping lake level affects agriculture, public health and the environment — but water conservation can halt the decline.
- Climate
Greta Thunberg’s new book urges the world to take climate action now
Greta Thunberg's ‘The Climate Book’ covers the basic science of climate change, the history of denialism and inaction, environmental justice and solutions.
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- Genetics
Black Death immunity came at a cost to modern-day health
A genetic variant that boosts Crohn’s disease risk may have helped people survive the 14th century bubonic plague known as the Black Death.
