Searching for willow ptarmigans in Ontario’s far north.
Some maintain a tally of observations in a certain county, province, or country. A portion of a birder’s regional list is ...
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Global warming and mass extinctions: What we can learn from plants from the last ice age
Global warming is producing a rapid loss of plant species -- according to estimates, roughly 600 plant species have died out since 1750 -- twice the number of animal species lost. But which species ...