Questions

Three Indians – Ratan Tata, Lakshmi Mittal and Vinod Khosla have been featured on Forbe's list of the 100 Greatest Living Business Minds.

Many types of renewable energy resources such as wind and solar energy are constantly replenished and will never run out.

The air forces of China and Pakistan began a joint training exercise SHAHEEN and deployed their latest fighter jets and AWACS aircraft. 

Finance minister Arun Jaitley was on 13 March 2017 given the additional charge of the defence ministry after Manohar Parrikar resigned+ to take on the new role of Goa chief minister.

Coal is chemically complex fuel. Whenever it is burned, gases are given off and particles of ash, called "fly ash," are released. Release of sulfur from burning into the air. The sulfur in coal combines with oxygen to form sulfur dioxide, which can be a major source of air pollution if emitted in large enough quantities. This stuff comes back as acid rain when it attaches itself to a raindrop. 

Today, many of the effects of coal burning have been reduced significantly or eliminated. This is super-nasty and is only stopped by buying low-sulfur coal from Montana or Wyoming. The eastern power plants have to pay to move the coal from out west and this increases the price of power production.