Earth
- Earth
Coastal waters were an oxygen oasis 2.3 billion years ago
Coastal waters contained enough oxygen to support complex life-forms including some animals hundreds of millions of years before fossils of such life first appear.
- Climate
Petrified tree rings tell ancient tale of sun’s behavior
The 11-year cycle of solar activity may have been around for at least 290 million years, ancient tree rings suggest.
- Earth
Mapping the future of continents and batteries
Editor in chief Eva Emerson discusses how science provides new perspectives on the past and the future.
- Earth
Evidence falls into place for once and future supercontinents
Shifting landmasses have repeatedly reshaped Earth’s surface. Researchers piecing together the past are now picturing a new supercontinent, due in 250 million years.
- Earth
Antarctica’s Larsen C ice shelf nears breaking point
A fast-growing crack in Antarctica’s Larsen C ice shelf could soon break off a 5,000-square-kilometer hunk of ice into the ocean.
- Earth
Antarctic ice shelf heading toward collapse
A fast-growing crack in Antarctica’s Larsen C ice shelf could soon break off a 5,000-square-kilometer hunk of ice into the ocean.
- Climate
Warming could disrupt Atlantic Ocean current
The Atlantic current that keeps northwestern Europe warm may be less stable under future climate change than previously thought, revised simulations show.
- 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.
- Earth
Megadiamonds point to metal in mantle
Imperfections in supersized diamonds hint at metallic iron and nickel in Earth’s mantle.
- 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.
