Measuring moon dust to fight air pollution

Moon dust, or regolith, isn't like the particles on Earth that collect on bookshelves or tabletops—it's abrasive and it clings to everything. Throughout NASA's Apollo missions to the moon, regolith posed a challenge to ...

'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.

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