The Invalides dome is seen from the Generali balloon, which measures air quality as Paris suffers a pollution spike. Paris' Police authority is again cracking down on the city's ro...

Delhi Chief Minister Arvind Kejriwal at a function to administer pledge to students to combat air pollution at Rajkiya Pratibha Vikas Vidyalaya, Civil Lines in New Delhi.

In this file photo, smoke billows out of a chimney of a small scale factory in New Delhi.

Delhi Chief Minister Arvind Kejriwal, centre, takes part in a cycle rally during car free day covered only a six-kilometer (4-mile) stretch, in New Delhi. The world's most polluted...

A Sukoi 30 MKI takes off from a forward airbase in the Western sector near the Pakistan border.

An F16 jet of Singapore Air Force aerobatics team the Black Knights fires flares as it performs a maneuver during final day of the Singapore Air Show.

A Jet Of Cool

If you were in circulation in the ’80s, you might remember Top Gun, the Cruise crewcut, his seductive crackle in uniform. Not a bad substitute i...

Red Bulls perform at Aero India 2011, in Bangalore.

Eurofighter performs at Aero India 2011, in Bangalore.

IAF's Sarang helicopters display their skills as a fighter plane is seen parked during the Aero India 2011, India's biggest air show, at Yelahanka Air base in Bangalore.

IAF's Sarang helicopters display their skills as a fighter plane is seen parked during the Aero India 2011, India's biggest air show, at Yelahanka Air base in Bangalore.

Red Bull team display their skills during the Aero India 2011, India's biggest air show, at Yelahanka Air base in Bangalore.

A fighter aircraft during the Aero India 2011, India's biggest air show, at Yelahanka Air base in Bangalore.

IAF's Sarang helicopters display their skills during the Aero India 2011, India's biggest air show, at Yelahanka Air base in Bangalore.

An IAF crew member sitting inside the cockpit of a parked foreign aircraft during the Aero India 2011, India's biggest air show, at Yelahanka Air base in Bangalore.

Defence Minister A K Antony with IAF chief Air Chief Marshal P V Naik during Aero India 2011, India's biggest air show, at Yelahanka Air base in Bangalore.

IAF Sukhoi Su-30 fighter aircrafts fly in formation as they perform at the opening ceremony of Aero India 2011 in Yelahanka air base in Bangalore.

IAF aircrafts perform aerobatic flight at the opening ceremony of Aero India 2011 in Yelahanka air base in Bangalore.

IAF Sukhoi Su-30 fighter aircraft takes off at the opening ceremony of Aero India 2011 in Yelahanka air base in Bangalore. More than 300 weapon makers are participating in the five...

A View of parked aircrafts during the inauguration of the Aero India 2011, India's biggest air show, at Yelahanka Air base in Bangalore.