Washington  - Barack Obama declared victory in the Democratic presidential nomination after a five-month battle with Hillary Clinton, becoming the first African-American to lead a major political p

Washington, June 4 : Scientists at the Fraunhofer Institute for Physical Measurem

Washington, June 4 : Medical researchers have developed a new approach to remove harmful microbes and viruses from drinking water, using a genetic tool.

Washington, June 4 : A scientist has determined that bioenergy can be the best realistic alternative to meet our current and future energy needs while cutting back on the use of fossil fuels.