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Understanding dynamic stall at high speeds

Although many fixed-wing aircraft can withstand similar rapid pitch-up maneuvers, a vehicle subject to this dynamic stall process is not reliably controllable. Motivated by the…

Graphene’s magic is in the defects

A team of researchers has solved a longstanding puzzle of how to build ultra-sensitive, ultra-small electrochemical sensors with homogenous and predictable properties by discovering how…

Greener days ahead for carbon fuels

A discovery shows that recycling carbon dioxide into valuable chemicals and fuels can be economical and efficient — all through a single copper catalyst.

Uber starts bus service in Cairo

Uber started a minibus service in Cairo under the name Uber Bus. Passengers who have the same destination are brought together.