Techradar
3 hours
It's pretty simple to explain how it works. When you've got more power than you need you use the excess to pump air into a large cavern underground (like those found in salt formations as pictured above, for example). When you want to get the power out, the air is released through a turbine which spins to generate electricity. Air and heat But there's another factor to consider - heat. When the air is compressed, it heats up and that heat is valuable for energy too. So researchers have now figured out a way to store heat alongside the compressed air. By passing the hot compressed air through a second cavern filled with crushed rock, the heat is transferred to the rocks (which hold it for much longer than the air would normally). When the air returns through that rock on its way back out, it gets reheated by the stones and can then be used to generate electricity.
Den of Geek
5 hours
RT
6 hours
Daily Express
7 hours
Daily Express
7 hours
South China Morning Post
8 hours
TIME - Top Stories
11 hours
Global News
12 hours
BBC News 24
13 hours
because the world has changed. We are not throwing rocks anymore. We are going to kill everybody. From cyberspace, we can cut off the electrical grid of any city on the planet. Are you all crazy? You are standing there watching it happen. The students don't have money to pay tuition, the refugees have no homes to go to, the old people are dying.
ABC News - Queensland
16 hours
Damage from Cyclone Debbie has cut all roads to the towns of Bowen, Airlie Beach and Proserpine, while Queensland police are searching for two men on board a boat that ran aground on rocks near Whitsunday Island last night.
BBC Two England
17 hours
because it's a big area so you've got a decent chance some will land. But it's mostly pretty clear of vegetation. You can see black rocks on the.
BBC Two England
18 hours
Emu? Where I come from the EE new is the Creator God -- the Emu is the Creator God. He made the rocks and the trees, he made.
Channel 4
18 hours
black African comrades because he was Asian, but he refused. They broke rocks together. Strict laws kept Africans in their place. Segregated park benches..
Daily Mail - Home
20 hours
The Northern Echo
21 hours
A MOTHER has told of the moment youths threw rocks at her car as her partner drove along a dual carriageway at 70mph.
ScienceDaily
a day
Ruptly TV
a day
Times of Israel
2 days
The Event Chronicle
2 days
Sputnik International
2 days
Voice Of America
2 days
TIME - News
2 days
A controversial jewelry billboard that some think encourages violence against women has sparked widespread online outrage . Featuring the tagline, Sometimes, it's OK to throw rocks at girls..., surrounded by colorful gemstones, the Spicer Greene Jewelers advertisement which was placed along the interstate in Asheville, N.C. has been criticized by many who were upset by the slogan. Spicer Green apologized for the billboard on Facebook Thursday, saying the sign was not intended to convey a violent subtext. To whom we have offended with our recent billboard, please accept our apologies. We do not condone violence of any kind toward any being. We are humble enough to realize when we make a mistake and humble enough to realize the context in which we are speaking. We did not intend to cause controversy and our billboard communicated something we did not intend.
TIME - Top Stories
2 days
A controversial jewelry billboard that some think encourages violence against women has sparked widespread online outrage . Featuring the tagline, Sometimes, it's OK to throw rocks at girls..., surrounded by colorful gemstones, the Spicer Greene Jewelers advertisement which was placed along the interstate in Asheville, N.C. has been criticized by many who were upset by the slogan. Spicer Green apologized for the billboard on Facebook Thursday, saying the sign was not intended to convey a violent subtext. To whom we have offended with our recent billboard, please accept our apologies. We do not condone violence of any kind toward any being. We are humble enough to realize when we make a mistake and humble enough to realize the context in which we are speaking. We did not intend to cause controversy and our billboard communicated something we did not intend.
RT USA
2 days
A man tried to break into the Islamic Center of Fort Collins with rocks, outdoor furniture, and even a Bible, resulting in heavy damage to the building’s doors and exterior. About 1,000 people gathered later in the day to show support. Read Full Article at RT.com