Why do some people sneeze when they look at the sun?

By Ferris Jabr and Michael Easter | Posted November 9, 2009

News reports say that rain can trigger autism. Is that true?

By Lynne Peeples | Posted January 12, 2009

How Safe is Botox?

By Carina Storrs | Posted January 5, 2009

What are tropical glaciers and why do they matter?

Asks Scott from Nyack, NY

By Lindsey Konkel | Posted December 15, 2008

Are Girls Really Meaner Than Boys?

Asks Kim from Cincinnati, Ohio

By Frederik Joelving | Posted December 8, 2008

Al Gore’s movie ‘An Inconvenient Truth’ says sea levels could rise up to 20 feet. Is this true?

Asks Steve from Florida

By Rachael Rettner | Posted December 1, 2008

What happens when your arm “falls asleep?”

Asks John from New York

By Adam T. Hadhazy | Posted November 24, 2008

Why is there not a vaccine for HIV?

Asks Alex from Philadelphia

By Victoria Stern | Posted November 17, 2008

Are old forests carbon neutral?

Asks Rob from Los Angeles, CA

By Lindsey Konkel | Posted November 10, 2008

Is the MRI lie detector test reliable?

Asks Leo in Arizona

By Christopher Intagliata | Posted November 3, 2008