A

Researchers from the USA and Brazil turned apple waste into clean energy. Apple waste produced by making apple juice went through dry anaerobic digestion（干式厌氧发酵）. This is a process where the waste is dried and put into a closed object. The waste is then broken down, producing energy. The energy can be used to run machines in the factory in which it is made.

B

Car parking has been hard for people in some big cities. Researchers at Rutgers University in the USA recently have developed an automated（自动化的）parking system that means drivers don't have to worry about parking their cars. Drivers would just need to drop their cars at the gate and expect them at another gate later. Researchers are now testing the system using toy cars.

C

With this wearable beanbag, you can lie down as you want! Takikou Sewing, a Japanese clothing company, has recently created a wearable beanbag that allows you to comfortably sit or lie down anytime, anywhere. The bean-like clothes let you lie down, lie on your stomach, or even sit where you are playing on your phone without needing a bed or sofa. 

D

You have heard of drug-sniffing（缉毒的）dogs, but have you ever heard of drug-sniffing squirrels? According to CCTV, Chongqing recently announced new members for its local police—drug-sniffing squirrels. The Chongqing police told the public that these squirrels are small and quick, and are able to search through tiny or high spaces that dogs cannot reach.