Scientists can spend years working on problems that at first may seem esoteric and rather pointless. For example, there's a scientist in Arizona who's trying to find a way to measure the age of wild mosquitoes.
As weird as that sounds, the work is important for what it will tell scientists about the natural history of mosquitoes. It also could have major implications for human health.
In Antarctica, Russian scientists posed at the site where they say they've drilled through to Lake Vostok. The sign indicates that the breakthrough happened on Feb. 5, 2012.
Credit Russia's Federal Service for Hydrometeorology and Environmental Monitoring
One week after pausing with about 40 feet to go, Russian scientists today announced that they have successfully drilled through two miles of ice to reach Lake Vostok — a body of water the size of New Jersey that hasn't been touched for millions of years.