The impact of an asteroid or comet is acknowledged as the principal cause of the mass…
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Toxic Sydney bushfire haze a 'public health emergency'
Australia’s biggest city is facing a “public health emergency” over the bushfire smoke that has choked…
Scientists find that unappetizing moths make less effort to escape attacking bats
You might think that prey would invariably flee in terror from a predator. But what if…
Smaller class sizes not always better for pupils, multinational study shows
A new statistical analysis of data from a long-term study on the teaching of mathematics and…
Hubble’s celestial peanut
Image: This image from the NASA/ESA Hubble Space Telescope shows NGC 1175, a galaxy with an…
Geminid meteor shower's dust trail spotted for the first time
NASA’s Parker Solar Probe spotted Geminid meteor shower’s dust trail from space for the first time…
Anak Krakatau: Giant blocks of rock litter ocean floor
Landslide debris from the collapsed Anak Krakatau volcano is imaged on the seabed for the first…
Anger, relief but no joy as UN climate talks limp to an end
A marathon UN summit wrapped up Sunday with little to show, squeezing hard-earned compromises from countries…
How Madrid talks fell short on climate ambition
This year’s U.N. climate negotiations in Madrid, the longest in 25 nearly annual such gatherings, ended…
Smog forces schools shut in Iran
Air pollution forced schools to close on Sunday in parts of Iran including Tehran, as the…