Issue Date: Jun 15, 2011
JUST after the Big Bang, about 14 billion years ago, the universe was packed with equal amounts of matter and antimatter. Antimatter contains the same set of subatomic particles as matter but with opposite charges. Protons have antiprotons; neutrons, antineutrons; and electrons, antielectrons. When the two come in contact, they annihilate each other. Scientists do not have a definitive answer to why matter won the war and the universe is composed only of matter. But it is believed a slight asymmetry gave matter an edge over antimatter, knocking it out almost entirely.
Recent Supreme Court order in Vedanta case holds hope for tribal community life
Butterflies on the roof of the world is a vivid and engaging narrative of the author's rendezvous with the butterflies and moths in particular, and nature in general