News
- Earth
‘Waterworld’ Earth preceded late rise of continents, scientist proposes
Cooling mantle temperatures may have lifted Earth’s continents above sea level, helping spur the Cambrian explosion.
- Earth
Data show no sign of methane boost from thawing permafrost
Rapid Arctic warming has increased emissions of carbon dioxide, but not methane, from northern Alaska tundra.
- Neuroscience
Pregnancy linked to long-term changes in mom’s brain
Pregnancy can sculpt a mother’s brain in a way that may help her tune in to her baby.
- Anthropology
Monkeys have vocal tools, but not brains, to talk like humans
Macaques have vocal tracts, but not brains, built for talking much as people do, scientists say.
- Tech
Cells snack on nanowires
Human cells eat silicon nanowires in a process called phagocytosis. Nanowire-infused cells could be a step towards biological electronic devices.
- Anthropology
New footprint finds suggest range of body sizes for Lucy’s species
Tracks discovered in Tanzania appear to have belonged to the tallest known Australopithecus afarensis individual, but stature estimates can be tricky.
- Earth
Megadiamonds point to metal in mantle
Imperfections in supersized diamonds hint at metallic iron and nickel in Earth’s mantle.
- Planetary Science
Dawn spacecraft maps water beneath the surface of Ceres
Water ice sits just beneath the surface and within some permanently shadowed craters of the dwarf planet Ceres.
- Genetics
Proteins that reprogram cells can turn back mice’s aging clock
Proteins that reprogram adult cells to an embryonic-like state can rejuvenate prematurely aging mice.
- Climate
Arctic kelp forests may create summer refuges from ocean acidification
Long summer daylight revs up carbon capture in Arctic kelp forests, offering a little relief from acidifying ocean water.
- Earth
Earth’s mantle is cooling faster than expected
The thinning of newly formed oceanic crust suggests that Earth’s mantle is cooling much faster than previously thought.
- Ecosystems
Oyster deaths linked to ‘atmospheric rivers’
Atmospheric rivers bring strong storms that could have been behind a 2011 California oyster die-off.
