Earth
- Earth
A drop in CFC emissions puts the hole in the ozone layer back on track to closing
After a recent bump in illicit CFC-11 pollution, emissions of the ozone-destroying chemical are back down to pre-2013 levels.
- Earth
Three things to know about the disastrous flood in India
The flood, which killed at least 30 people, may have been caused by a collapsing glacier or a landslide, with climate change possibly playing a role.
- Earth
Fossil mimics may be more common in ancient rocks than actual fossils
Evidence of early life may be harder to preserve than pseudofossils — structures that form abiotically but resemble living remnants.
- Earth
The birth of a lightning bolt was caught on video
High-speed imagery shows the formation of an electrical connection between opposing currents, offering new insight into how these flashes form.
- Earth
An upwelling of rock beneath the Atlantic may drive continents apart
Rock rising from more than 600 kilometers deep at the Mid-Atlantic Ridge may play a more active role in plate tectonics than thought.
- Climate
Ship exhaust studies overestimate cooling from pollution-altered clouds
Lines of clouds formed by ship exhaust offer a window into aerosol-cloud interactions but may overestimate how much pollution-altered clouds cool the climate.
- Climate
How much will Africa capitalize on cheap renewable energy as its power grid grows?
An analysis of the successes and failures of past electrical power projects across Africa suggests the continent isn’t likely to go green before 2030.
- Earth
Space station detectors found the source of weird ‘blue jet’ lightning
The origins of an enigmatic type of lightning in the upper atmosphere has been traced to a 10-microsecond flash of bright blue light.
- Animals
Some bacteria are suffocating sea stars, turning the animals to goo
For years, researchers thought an infectious pathogen was behind sea star wasting disease. Instead, bacteria deplete the starfishes’ oxygen.
- Climate
‘The New Climate War’ exposes tactics of climate change ‘inactivists’
In his new book, climate scientist Michael Mann draws the battle lines for a new phase of the struggle against climate change denialism.
- Climate
2020 and 2016 tie for the hottest years on record
Ocean temperature data as well as temperatures measured over land at weather stations around the globe revealed the extent of the warming.
- Earth
How the Earth-shaking theory of plate tectonics was born
Plate tectonics explains many of Earth’s geologic wonders and natural hazards — and may hold clues to the evolution of life.
