Why Some Cancers Are Worse Than Others
Why Some Cancers Are Worse Than Others

Megan Sweet slices tumors. A normal day in the lab finds the Virginia Tech graduate student with hands deep inside a refrigerated metal box, pulling a mounted mouse-grown tumor incrementally closer to…

The 700-Million-Year History of Our Blood Cells
The 700-Million-Year History of Our Blood Cells

How animals expanded the evolutionary legacy of our unicellular ancestors Almost all animal species — including humans — have blood cells, but between different species our blood tells different stories. The lineage…