Life
We summarize the week's scientific breakthroughs every Thursday.
- Humans
Neandertal DNA from cave mud shows two waves of migration across Eurasia
Genetic material left behind in sediments reveals new details about how ancient humans once spread across the continent.
- Life
Only 3 percent of Earth’s land hasn’t been marred by humans
A sweeping survey of terrestrial ecosystems finds that vanishingly little land houses all the animals it used to. Species reintroductions could help.
- Paleontology
‘Monkeydactyl’ may be the oldest known creature with opposable thumbs
A newly discovered pterosaur that lived during the Jurassic Period could have used its flexible digits to climb trees like a monkey.
- Anthropology
A coronavirus epidemic may have hit East Asia about 25,000 years ago
An ancient viral outbreak may have left a genetic mark in East Asians that possibly influences their responses to the virus that causes COVID-19.
- Neuroscience
Surprisingly, humans recognize joyful screams faster than fearful screams
Scientists believed we evolved to respond to alarming screams faster than non-alarming ones, but experiments show our brains may be wired differently.
- Ecosystems
Wildfires launch microbes into the air. How big of a health risk is that?
How does wildfire smoke move bacteria and fungi — and what harm might they do to people when they get there?
- Animals
Discarded COVID-19 PPE such as masks can be deadly to wildlife
From entanglements to ingestion, two biologists are documenting the impact of single-use masks and gloves on animals around the world.
- Oceans
Corals’ hidden genetic diversity corresponds to distinct lifestyles
Observation and DNA analysis expose identical reef corals as distinct species with unique ecologies, suggesting much greater coral biodiversity.
- Animals
How researchers can keep birds safe as U.S. wind farms expand
Tracking bald eagle abundance and migrating whooping cranes provides a clearer picture of where wind turbines could be safely built.
- Anthropology
Ancient humans may have had apelike brains even after leaving Africa
Modern humanlike brains may have evolved surprisingly late, about 1.7 million years ago, a new study suggests.
- Genetics
Europe’s oldest known humans mated with Neandertals surprisingly often
DNA from ancient fossils suggests interbreeding regularly occurred between the two species by about 45,000 years ago, two studies find.
- Animals
Tiny crystals give a plain fish twinkling, colorful dots under light
Fishes’ flashing photonic crystals may provide inspiration for ultra-miniaturized sensors that work in a living body.
