Real-Life Tractor Beam Pulls in Particles The invisible force that pulls in the Millennium Falcon spacecraft to the Death Star in "Star Wars" movies is still far from becoming a reality, but physicists have developed a miniature version of sorts: a tractor beam that can reel in tiny particles.
The 9 Deadliest Viruses on Earth Humans have been fighting viruses throughout history. Here are the nine viruses that are the world's worst killers, based on their mortality rates, or the sheer numbers of people they have killed.
With Ebola, Are Bats Getting a Bad Rap? (Op-Ed) The unpredictable nature and novelty of zoonotic pathogens make them incredibly difficult to defend against and respond to. But that does not mean we are helpless in the face of emerging ones.
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