The Russians want to run a simulated trip to Mars in order to assess the physiological and psychological effects of being enclosed with 5 other people for 520 days. They are asking for volunteers willing to take part in the simulation which sounds horrible to me.Highlights from the article:

• Once the doors are closed tight, the volunteers will be cut off from all contact with the outside world except by a delayed radio link.
• Communications with the simulated mission control and loved-ones will take up to 40 minutes, the time that a radio signal takes to cross the void between Earth and a spaceship on Mars
• They will get paid 120 euros (158 dollars) a day.