Category: news
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Control Freaks
Tiny genetic snippets called microRNAs may promote metastasis Biologists know quite a bit about the steps that turn a normal cell into a cancerous one. Their understanding of metastasis, on the other hand, is somewhat more hazy. Now a short stretch of genetic material has been implicated in the spread of breast cancer, according to…
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Permafrost that lives up to its name
Ancient Canadian ice survived previous warm periods. A 740,000-year-old wedge of ice discovered in central Yukon Territory, Canada, is the oldest known ice in North America. It suggests that permafrost has survived climates warmer than today’s, according to a new study. “Previously, it was thought that the permafrost had completely disappeared from the interior about…