Times of India: As long as the 21st-century man will continue to tamper with natural buffers like the Aravali hills, hotter summers (and warmer winters) will become a way of life. The Aravali bionetwork has been around for aeons. "They're much more ancient than the Himalayas, and they're uniquely important," says Amina Shervani, a Gurgaon-based entrepreneur and land-rights activist. "We are fortunate to have something as the Aravallis next door." These hills, she explains, created a system of lakes where run-off...