A mutation in a single gene causes catastrophic epilepsy, U.S. scientists say. And that finding, they say, could lead to treatments or a cure for the disorder.

British scientists have created human sperm using stem cells in a technique that could revolutionize fertility treatment.

Scientists at the European Molecular Biology Laboratory and the University of Heidelberg, Germany, have come a step closer to understanding how cholesterol levels are regulated.

Going out like a brilliant flame is one way to get attention. If physicians could watch tumor cells committing a form of programmed suicide called apoptosis, a desired effect of workhorse cancer treatments such as chemotherapy and radiotherapy, they could more quickly pick the most effective treatment.

Scientists at Albert Einstein College of Medicine of Yeshiva University have devised a laboratory test for predicting whether microbicides against HIV are safe for human use.

Dundee scientists say they have shown that E. coli, one of the most extensively studied organisms in the world, still has some secrets that may hold the key to human diseases, such as cancer.

A Saint Louis University researcher is studying whether a group of immune system cells that is capable of preventing rheumatoid arthritis also can be used to treat the disease.

Scientists in Montreal have discovered that not all human cells are identical, a surprising observation that could turn genetic research upside down.

"Nearly all scientists say humans and other living things have evolved over time," while only 61% of the public agrees, according to a new report from the Pew Research Center for the People & the Press.

The Week In ScienceBlogs: Sign up for our newsletter. Profile PZ Myers is a biologist and associate professor at the University of Minnesota, Morris .