Ambient fine particulate matter (PM2.5) is the world's leading environmental health risk factor. At only 2.5 micrometers or smaller, these particles are small enough to be inhaled and cause respiratory problems, such as asthma ...
Environment
Sep 6, 2023
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103
The Orinoco crocodile (Crocodylus intermedius) is a critically endangered species native to the Orinoco River basin in Colombia and Venezuela. It is one of the largest crocodilian species in the world, reaching lengths of ...
Ecology
Jul 26, 2023
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100
Evolutionary biologists aim to form fundamental connections between microevolutionary processes and macroevolutionary patterns based on comparative datasets of population-level variation. In a new report on Science Advances, ...
Ask any pet owner if their beloved companion has a personality and you'll most often get an emphatic "yes". But now tiger researchers can nod along too—a study published Wednesday reveals that the world's largest felines ...
Plants & Animals
Apr 5, 2023
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357
Over the past decade, deadly wildfires have become increasingly common because of both human-caused climate change and disruptive land management practices. Southern California, where the three of us live and work, has been ...
Ecology
Aug 20, 2023
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29
A study led by Brazilian researchers and reported in an article published on January 11 in the journal Science shows that 82% of the more than 2,000 species of trees found only in the Atlantic Rainforest biome are threatened ...
Plants & Animals
Jan 16, 2024
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184
The North Arabian Desert oases were inhabited by sedentary populations in the 4th and 3rd millennia BCE. A fortification enclosing the Khaybar Oasis—one of the longest known going back to this period—has just been revealed ...
Archaeology
Jan 10, 2024
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31
Lettuce and other leafy green vegetables are part of a healthy, balanced diet—even for astronauts on a mission.
Space Exploration
Jan 22, 2024
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54
California sea lions have managed to maintain—and, in the case of males, increase—their average body size as their population grows and competition for food becomes fiercer. This is in contrast to other marine mammals, ...
Plants & Animals
Apr 27, 2023
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76
There is broad agreement that Homo sapiens originated in Africa. But there remain many uncertainties and competing theories about where, when, and how.
Archaeology
May 17, 2023
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