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 248 microgram/cubic metre. The permissible limit is 200 microgram/cubic metre.

After years of lambasting US vehicle efficiency standards as being weaker than those of China, green campaigners delighted in the stronger measures proposed by President Barack Obama, writes Fiona Harvey in London .

The Chinese delegation headed by Jamshaid Ullah, General Manager, Rimedyne Refrigeration System Co Ltd, committed to export 30 CNG buses in the first phase for Islamabad, while CDA informed that they need 500 CNG buses for Islamabad which is environment friendly.

The nationwide automobile mileage and emissions standards announced by President Obama on Tuesday represent a huge step forward in the effort to limit greenhouse gases and reduce America

President Barack Obama took aim at climate-warming greenhouse gases on Tuesday and ordered the struggling auto industry to make more fuel-efficient cars under tough new national standards to cut emissions and increase gas mileage.

President Barack Obama on Tuesday unveiled an aggressive policy initiative to increase U.S. auto fuel efficiency and regulate auto emissions.

PRESIDENT Barack Obama wants US drivers to get better fuel efficiency and cause less damage to the environment

The tough U.S. fuel economy standards announced by President Barack Obama on Tuesday represents a bonanza for companies that supply hybrid technology and other gas-conserving components needed to meet the new benchmarks.

President Barack Obama's tough fuel economy program for vehicles could put another damper on the struggling ethanol business, because the alternative fuel packs a lower energy content than gasoline.

President Barack Obama announced the first national standard for greenhouse-gas emissions from automobiles and tougher fuel mileage standards that mark the most sweeping new regulation of the industry in decades.