Stratospheric ozone depletion between 1979 and 2010 resulted in a slight decrease of ozone in the troposphere during that period despite increased ozone production from anthropogenic emissions.
Climate Change
Posted inScience Updates
Once Again into the Northwest Passage
After two unsuccessful tries, a hardy band of undergraduate students conducted a successful Arctic research and outreach expedition through the Northwest Passage.
Posted inNews
Long Live the Laurentian Great Lakes
Living in Geologic Time: Billion-year-old rifting events set the stage for Earth’s greatest lakes.
Posted inResearch Spotlights
How Much Modification Can Earth’s Water Cycle Handle?
The planetary boundaries framework defines how much human disturbance various Earth system processes can take, but it may not adequately depict the water cycle or the extent to which we’ve altered it.
Posted inNews
Shrinking Ice Sheets Lifted Global Sea Level 14 Millimeters
Researchers measure both grounded and floating ice sheets using satellite data spanning a 16-year period.
Posted inNews
No Mask? You May Not Worry About Climate Change, Either
People untroubled by climate change are more likely to forgo masks in public.
Posted inResearch Spotlights
A Revised View of Australia’s Future Climate
The most recent generation of models of the Coupled Model Intercomparison Project better captures rainfall drivers, extreme heat events, and other facets of regional climate.
Posted inScience Updates
Asia’s Mega Rivers: Common Source, Diverse Fates
How do humans affect the ways that Asia’s mega rivers deliver sediment and dissolved matter to farms, river deltas, and, eventually, the sea? A proposed study would construct an integrated picture.
Posted inEditors' Highlights
How Does Convection Work Over the Tropics?
A new conceptual framework on how convection works in the tropics helps advance understanding of the contrast between land and ocean and how the tropics will respond to climate change.
Posted inNews
Humans Colonized Polynesia Much Earlier Than Previously Thought
Evidence from mud, charcoal, and feces suggests humans arrived in East Polynesia during the driest period in 2 millennia.