All Things Considered on KRVS

Government prosecutors in Russia have brought criminal charges against a leading dissident, Alexei Navalny.

Navalny writes a popular blog that points to alleged corruption in the Russian government, and he helped lead the anti-government protests in Moscow this past winter.

He says the charges — that he stole timber from a state-owned company — are part of a campaign to crack down on opposition by Russian President Vladimir Putin and his regime.

Scientists reported new evidence Wednesday that supports a provocative theory about cancer.

Three separate teams of scientists said they had, for the first time, shown that so-called cancer stem cells can be found naturally in brain tumors and early forms of skin and colon cancer.

Evidence has been mounting in recent years for the existence of these cells, which would be especially insidious. They are believed to resist standard chemotherapy and radiation and fuel the growth of tumors and relapses.