Over a few million years, the spider Dysdera tilosensis—a species endemic to the Canary Islands—has reduced the size of its genome by half during the process of colonization and adaptation to its ...
On a foggy Saturday morning in 1953, a tall, skinny 24-year-old man fiddled with shapes he had cut out of cardboard. They ...
DNA shines a light back into the past, showing us things that fossils can't. But how far back can that light extend? Some of the oldest DNA sequences come from mastodon and polar bear fossils about 50 ...
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