Most marine animals form their shells from calcium carbonate, which is a tough mineral also found in limestone. Some sponges ...
Shells of Ancient Ice Age Marine Life Suggest A Common Weather Phenomenon Is About to Get Much Worse
Some 20,000 years ago, when the last ice age was at its peak, a marine animal with an ultrashort lifespan of just one month, really lived in the moment. In its brief and wondrous life, the ...
One hundred thousand years ago, a human cousin walked a rock- ribbed beach along the Mediterranean Sea, her head lowered and her large eyes scanning the shoreline. Now and again she stopped, bent her ...
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