Some people with chest pain have normal or minimal narrowing of heart arteries; in these patients, vasospasm is a more likely cause for the pain, sometimes in the context of Prinzmetal's angina and syndrome X.
You are here. Pure Live Seed. Pure live seed (PLS) is a measure used by the seed industry to describe the percentage of a quantity of seed that will germinate. PLS is obtained by multiplying the purity percentage by the percentage of total viable seed, then dividing by 100.
Ig Nobel Prize. A live frog is magnetically levitated, an experiment that earned Sir Andre Geim from the University of Nijmegen and Sir Michael Berry from University of Bristol the 2000 Ig Nobel Prize in physics. Geim went on to win the Nobel Prize in Physics in 2010 for his work on graphene.