A disused coal mine in Wollongong will be the first test site for a renewable energy company that lowers weights down old mine shafts to spin turbines and create electricity.
The architects behind the Burj Khalifa in Dubai — the world's tallest building, for those keeping score — are teaming up with a startup to turn future skyscrapers into massive, gravity-powered ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback