The World’s Most Powerful Tidal Turbine Is Almost Complete — from interestingengineering.com by Christopher McFadden
Allegedly the world’s most powerful turbine, the O2 is almost complete.

Picture of the Orbital 02, purportedly the world's most powerful tidal turbine

Excerpt:

Once operational, the turbine will kick out nearly 2 megawatts of power. That is enough to power at least 2,000 homes in the UK every year. The turbine will be connected to the European Marine Energy Centre off the Orkney Islands.

 

Genesis Breaks World Record by Flying 3,281 Drones Over Shanghai — from interestingengineering.com by Fabienne Lang
The impressive stunt now holds the record of Most Unmanned Aerial Vehicles (UAVs) Airborne Simultaneously in the Guinness World Record book.

Genesis' drones over Shanghai