keywords: extinctions mammals mammal climate paleobiologist
text: Climate change plus human pressure caused large mammal extinctions &lt;b&gt;...&lt;/b&gt; Berkeley - A University of California, Berkeley, paleobiologist and his colleagues warn that the future of the Earth #39;s mammals could be as dire as it was between 50,000 and 10,000 years ago, when a combination of climate change and human pressure resulted 