Scientists develop a wearable sensor for plant leaves
Plants can’t speak up when they are thirsty.
And visual signs, such as shriveling or browning leaves, don’t start until most of their water is...
New tandem solar cells deliver record efficiency of 29.2%
EPFL scientists in Neuchâtel have developed a tandem solar cell that can deliver a certified efficiency of 29.2%.
This achievement was made possible by combining...
Scientists reveal how lithium’s narrow paths limit batteries
If you could shrink enough for a fantastic voyage across a lithium battery electrode, you’d see the level of charge at every scale is...
New solar cells set world record efficiency: 24%
Scientists have developed a tandem solar cell that reaches 24 percent efficiency.
This sets a new world record as the highest efficiency achieved so far...
Scientists make world’s first LED lights from rice husks
Milling rice to separate the grain from the husks produces about 100 million tons of rice husk waste globally each year.
Scientists searching for a...
This robotic gripper could grab items with feeling
The notion of a large metallic robot that speaks in monotone and moves in lumbering, deliberate steps is somewhat hard to shake.
But practitioners in...
This heat engine with no moving parts is as efficient as a steam turbine
Engineers at MIT and the National Renewable Energy Laboratory (NREL) have designed a heat engine with no moving parts.
Their new demonstrations show that it...
This recyclable pollen paper can print on and “unprint”
Scientists at Nanyang Technological University have developed a pollen-based "paper" that, after being printed on, can be "erased" and reused multiple times without any...
Giant space telescopes could be made out of liquid
The Hubble space telescope has a primary mirror of 2.4 meters.
The Nancy Grace Roman telescope has one at 2.4 meters and the James Webb...
Stanford researchers develop solar cells that could keep working at night
About 750 million people in the world do not have access to electricity at night.
Solar cells provide power during the day, but saving energy...