A low-cost technique could help convert more than 50 per cent of solar energy into mechanical and electrical energy. Naren Sheth, a Mumbai-based businessperson, has recently developed a solar
In an attempt to document lead levels in the blood of the people living in Delhi, the Central Pollution Control Board and the All India Institute of Medical Sciences in collaboration with the
A scientist in the US envisions that owners of tomorrow's electric cars would not only buy electricity for their vehicles but they could also be able to sell it back. Willett Kempton at the