Are you sure you got the very best chocolate for your Valentine?
A reversible genetic switch keeps Siberian hamsters from mating in harsh winter months.
Scientists who used computer simulations to study chemical reactions win the award for chemistry.
Nobel committee also cites Large Hadron Collider experiments as confirming the Higgs particle.
Updates and fun facts about this year's prize in physiology or medicine.
2 American cell biologists and a German biochemist will be awarded the 2013 prize for physiology or medicine.
This year, Inside Science will provide comprehensive coverage of the science-related Nobel Prizes.