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An air purifier tower, Mukherjee said, filters PM 10 and PM 2.5 particles from the atmosphere. "And the air inside the tower is heated using solar energy, and the hot filtered air is released from the top," he said.

An is confident vinyl will outlive other audio and video formats, which were superseded by new technologies. "It's video stores that have gone, while record stores are still standing," An said.

An initial two-hour charge of energy is needed to bring down the temperature of the PCM, after which the container can be transported and shifted between trucks and trains without the need for a power source. This makes them easier to move and more environmentally sound than conventional containers, which are commonly kept cool through diesel-powered refrigeration.

Among these endeavors, engineers from the Beijing Institute of Precision Mechatronics and Controls, part of the China Academy of Launch Vehicle Technology, seem to be ahead of others, since they can mass-produce their products as soon as the first contract is inked.

An innovative farming-based poverty alleviation campaign in Ganzhou, Jiangxi province, has tasted success.