Lake Vostok Reached
First time accepted submitter Cyberax writes "After 30 years of drilling and weeks of media attention the Antarctic underground lake Vostok has been reached by Russian scientists (translated article). Deep drilling in the vicinity of Vostok Station in Antarctica began in the 1970s, when the existence of the reservoir was not yet known. Scientists are beginning paleoclimatic studies and further exploration of the lake will continue in 2013-2014."
It turns out that the microbiological conditions of ancient lake Vostok are strikingly similar to those of early 21st century drilling mud.
The timeline altering implications of this discovery will keep scientists busy for decades!
You'd need to sober them up first. Good luck with that.