Öйú365betÖÐÎĹÙÍø

WASHINGTON, Nov. 17, 2014 � They are seemingly the most popular thing on the Internet, the subject of millions of videos and hundreds of memes: cats. This week Reactions answers some of the biggest kitty questions out there: Why does catnip make most cats go crazy? What does it mean when your cat rubs against your leg? How does kitty litter clump? Check out the nearly purr-fect video here: .

Subscribe to our weekly series at and follow us on Twitter .

The American Chemical Öйú365betÖÐÎĹÙÍø is a nonprofit organization chartered by the U.S. Congress. With more than 161,000 members, ACS is the world’s largest scientific society and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. Its main offices are in Washington, D.C., and Columbus, Ohio.