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In the particle identification business, two pieces of information are vital: energy and spatial location. By measuring its energy you can work out the mass of your mystery particle

Help scientists solve the mystery of epsilon Aurigae, a mysterious, bright, eclipsing binary variable star that has baffled scientists since 1821 [More]

It is hard to court the opposite sex when you are cemented in place, which explains why polyps--the tiny creatures whose exoskeletons form corals--do not reproduce by mating. Instead they cast millions of sperm and eggs into the sea, where they drift up to the ocean surface, collide, form larvae and float away to form new coral reefs

Carmela Cuomo thought she had the secret within reach, hidden in a shallow black tank at the NOAA marine fisheries laboratory in Milford, Conn. The horseshoe crabs she had plucked from New Haven Harbor in 2000 trundled about their springtime ritual, digging pits in the sand, laying their eggs and fertilizing them.

It’s one of the great frustrations of obstetric medicine: humans have been reproducing for hundreds of thousands of years, and yet doctors still haven't unraveled the mystery of why some women give birth well before their babies have fully developed in the womb. Despite researchers' and physicians' best efforts, the rate of preterm births--defined as babies born before 37 weeks of gestation--climbed 30 percent from 1981 through 2006.

Tiger Woods at the Masters is every bit the mystery he was a year ago.

Shortly after experiments on the Large Hadron Collider (LHC) at the CERN laboratory near Geneva, Switzerland began yielding scientific data last fall, a group of scientists led by a Syracuse University physicist became the first to observe the decays of a rare particle that was present right after the Big Bang. By studying this particle, scientists hope to solve the mystery of why the universe evolved with more matter than antimatter.