It also is requiring manufacturers to have third-party testers conduct air quality testing to ensure units comply with new specifications.

CNN: Report slams FEMA on health hazard in emergency housing

Syria's air and naval forces conducted live-fire manoeuvres aimed testing their readiness to repulse "any aggression against the homeland, " the official Sana news agency reported, with state TV pictures reportedly showing warplanes and helicopters firing missiles at targets in a desert area, as well as surface-to-air missiles hitting targets in the air.

BBC: Syria crisis: 'Nearly 200 lives lost' in last two days

The symbol of the test-pilot school at Edwards Air Force Base in the Mojave desert, where Mr Armstrong spent years testing military jets, flying the X-15 at 4, 000mph to the very edge of the atmosphere, is a slide rule over a stylised aircraft.

ECONOMIST: Neil Armstrong

In fact, the Air Force has already begun testing a program to certify coal-based synthetic fuels for the B-52 bomber, a process that may lead to synthetic fuel use in all of its planes.

FORBES: Coal's Many Friends

The Air Force is also testing jet engines using biofuels and had the first successful biofuel-powered test flight just last week.

WHITEHOUSE: Energy Security and Independence

Following a short testing period by our carrier partners, the patch will be sent over-the-air to customers, who will be notified to download and install it.

ENGADGET: HTC confirms security hole, says patch is incoming Mobile

Besides various technical problems, such as getting enough standardised equipment to different airports, persuading grumpy passengers trundling off a long-haul flight to hang around for testing is hard, even when they are rewarded with air miles, as they were in the South African study.

ECONOMIST: Deep-vein thrombosis: Causing trouble | The