A common theory holds that the building blocks for life came to Earth from comets that landed here billions of years ago. But what if they also came from within the planet?
The competition for Maryland's stem cell research grants will be stiffer than ever as applications flood in next month, forcing officials to be more selective even as scientists worry that the state's fiscal problems and a new administration in Annapolis may mean smaller budgets in the future.
An inch or more of rain is forecast to fall on Christmas Eve, with temperatures in the 50s throughout the day.
Soaking rain and blustery winds could cause travel delays across the eastern United States on Christmas Eve, forecasters said, after fog and drizzle snarled air traffic Tuesday.
A rainy pattern continues Tuesday with drizzle and temperatures in the 40s.
NASA is at risk of falling behind schedule in developing the successor to Hubble Space Telescope, due to be launched in October 2018, a government report found.
Baltimore gets a White Christmas only one year out of every decade, on average, and this is not that year.
The U.S. Navy renewed a $235 million contract with Lockheed Martin for manufacturing missile-firing systems used on warships at a facility in Middle River, the company said Tuesday.