The transport department has decided not to renew the route permits of commercial vehicles 15 years and older as part of the first concerted attempt with the environment department to implement the court

The world

CHENNAI: The level of total suspended particulate matter (TSPM) in the ambient air at a traffic intersection in Vallalar Nagar during the 24-hour period ending 6 a.m. on Tuesday was 312 microgram/cubic metre. The permissible limit is 200 microgram/cubic metre.

Tiny particles from traffic are known to cause bronchitis and asthma, killing thousands. But that is not all. Simply living beside a busy road can be fatal. Particles in vehicular exhaust can stick to lungs, endanger health, lead to joint pains and trigger infertility, writes Priyanka Chandola

Washington:A team of scientists is working on a new generation of eco friendly pyrotechnics that produce less smoke and use fewer toxic metals. Fireworks are fun and exciting, but the flashing displays can harm the environment and pose risks to human health.

Danny Goodman / New Delhi July 05, 2009, 0:48 IST

Manufacturers of compressed natural gas (CNG) kits are stepping up production to meet the expected surge in demand in the coming months.

The reason is a notification by the Delhi government that light commercial vehicles (LCVs), both three-wheelers and sub-one tonne four wheelers, have to convert to CNG by September 30 to ply in the city.