Shining a light on Colorado's little-known fireflies

Owen Martin steps carefully through the knee-high grass growing up around a long-abandoned railroad track near Sawhill Ponds in Boulder, Colorado. It's almost pitch black out. The sun set 45 minutes ago, and the only light ...

Warming Baltic Sea: a red flag for global oceans

Climate change combined with pollution from farming and forestry could flip northern Europe's Baltic Sea from being a sponge for CO2 to a source of the planet-warming gas, scientists studying told AFP.

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