What Made the Y Chromosome So Tiny?

The Y chromosome, a chunk of genetic code that is unique to male mammals, isn’t just physically smaller than the X. It also contains far fewer genes. The X has more than 1000 genes, while the Y has fewer than 200 —and most of them don’t even work. Why do men have this odd, stunted chromosome in their genomes? » 5/07/15 7:40pm 5/07/15 7:40pm

Think your sex life is complicated? Imagine having 7 sexes.

No, this isn't something out of an Octavia Butler novel. It’s Tetrahymena thermophila — a single-celled organism that goes way beyond male and female. It has seven different sexes to choose from. Now a new study published in PLOS has finally made sense of its bizarrely complex and seemingly random sex life. » 3/27/13 2:30pm 3/27/13 2:30pm

Stunning molecular biology illustrations look like floral abstract art

Molecular biology professor and artist David Goodsell has no trouble finding art in the human body. His hand-drawn watercolor illustrations explode with color while offering his visual interpretation of bacteria, viruses, and human cells. » 7/29/12 2:00pm 7/29/12 2:00pm

Cytochrome C in Apoptosis Cytotoxic T Cell DNA Polymerase Hemostasis Hepatitis B

Was Robert Hooke really the greatest asshole in the history of science?

Robert Hooke discovered the cell, established experimentation as crucial to scientific research, and did pioneering work in optics, gravitation, paleontology, architecture, and more. Yet history dismissed and forgot him... all because he pissed off Isaac Newton, probably the most revered scientist who ever lived. » 1/27/12 7:00am 1/27/12 7:00am

New microscope produces 3D movies of live cells in action

It's been a big week for the world of the small. In a new microscope breakthrough, researchers have figured out how to use a minuscule sheet of light to produce movies of living cells, revealing mitosis in action and illuminating cells' three-dimensional architecture with the greatest detail ever seen. » 3/06/11 8:00am 3/06/11 8:00am