'Emergency' declared over falling UK butterfly numbers

Conservationists on Wednesday voiced concern at a fall in the number of butterflies found in the UK, declaring a "butterfly emergency" and calling for greater protections for under-threat species.

There could be a way to fix spacecraft at L2, like Webb and Gaia

Billions of dollars of observatory spacecraft orbit around Earth or in the same orbit as our planet. When something wears out or goes wrong, it would be good to be able to fix those missions "in situ." So far, only the Hubble ...

Could we find primordial black holes in the solar system?

Astronomers have observed three types of black holes in the universe. Stellar-mass black holes formed from the collapse of a massive star, intermediate mass black holes found in some star clusters, and supermassive black ...

Researchers simulate how wildfires spread through communities

California has already recorded more than 6,000 wildfires this year, underscoring the need for better mitigation strategies to reduce their devastating impact. Now, researchers have created a model that may shed light on ...

World off track on climate fight but AI could help: UN

The world remains far off track in tackling climate crisis, but the UN voiced hope Wednesday that artificial intelligence and other cutting-edge technologies will help address the towering challenges.

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