Earth
- Climate
How today’s global warming is unlike the last 2,000 years of climate shifts
Temperatures at the end of the 20th century were hotter almost everywhere on the planet than in the previous two millennia.
- Earth
U.S. wells are pumping up groundwater from increasing depths
Around the United States, groundwater wells are getting deeper in search of new sources of freshwater, a new study shows.
- Ecosystems
Planting trees could buy more time to fight climate change than thought
Earth has nearly a billion hectares suitable for new forests to start trapping carbon, a study finds.
- Earth
Night-shining ‘noctilucent’ clouds have crept south this summer
Clouds high in the atmosphere that catch the sun’s rays even after sundown may be seen farther from the poles due to an increase in moisture in the air.
- Climate
‘Sunny day’ high tide floods are on the rise along U.S. coasts
Sea level rise led to record-breaking tidal flooding in cities along the U.S. East Coast, a NOAA report found.
- Tech
This solar-powered device produces energy and cleans water at the same time
Someday, the two-for-one machine could help curb electricity and freshwater shortages.
- Earth
3 questions seismologists are asking after the California earthquakes
After back-to-back quakes, scientists are scrambling to figure out which faults ruptured and what it means for future California quake activity.
- Animals
Southern right whale moms and calves may whisper to evade orcas
Mother-calf whale pairs call to each other quietly to stay in touch while avoiding attracting the attention of predators, a study suggests.
- Oceans
A mysterious coral disease is ravaging Caribbean reefs
Scientists are racing to learn what’s behind a disease that’s “annihilating” whole coral species in hopes of stopping it.
- Planetary Science
Readers wanted to know about asteroids, lithium batteries and more
Readers had questions and comments about asteroids, lithium batteries, and pyroclastic flows.
- Oceans
The largest seaweed bloom ever detected spanned the Atlantic in 2018
Nutrient-rich water from the Amazon River may be helping massive seaweed mats to flourish each summer in the Atlantic Ocean.
- Climate
Europe’s latest heat wave has been linked to climate change
Global warming made the June heat wave at least five times more likely to happen.
