News tagged with ice age

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Diatoms explain release of CO2

(Phys.org) —Scientists have found unexpectedly high concentrations of opal, a mineral containing silicate, in marine sediments during the transition periods from ice ages to warm phases. The explanation ...

Apr 10, 2013 5 / 5 (4) 4 | with audio podcast

What can 'ring species' teach us about evolution?

Ten thousand years ago, at the end of the last ice age, a species of greenish warblers lived in a forest south of the Tibetan Plateau. As the ice receded, the forest grew to form a ring around the plateau—and so did the ...

Mar 12, 2013 4.8 / 5 (5) 2 | with audio podcast