Archive for the ‘sustainability’ category: Page 554
Sep 30, 2017
Perovskite solar cells reach record long-term stability, efficiency over 20 percent
Posted by Shailesh Prasad in categories: solar power, sustainability
Perovskite solar cells (PSCs) can offer high light-conversion efficiency with low manufacturing costs. But to be commercially viable, perovskite films must also be durable and not degrade under solar light over time. EPFL scientists have now greatly improved the operational stability of PSCs, retaining more than 95% of their initial efficiencies of over 20 % under full sunlight illumination at 60oC for more than 1000 hours. The breakthrough, which marks the highest stability for perovskite solar cells, is published in Science.
Challenges of stability
Conventional silicon solar cells have reached a point of maturation, with efficiencies plateauing around 25% and problems of high-cost manufacturing, heavyweight, and rigidity has remained largely unresolved. On the contrary, a relatively new photovoltaic technology based on perovskite solar cells has already achieved more than 22% efficiency.
Sep 30, 2017
Electric car-sharing service begins in Singapore
Posted by Shailesh Prasad in categories: sustainability, transportation
Sep 30, 2017
Evaporating Water Could Power Almost 70% of The US Electrical Grid
Posted by Shailesh Prasad in categories: energy, sustainability
It’s not every day scientists say a new kind of renewable energy could satisfy the majority of our power needs, so when they do, it’s worth leaning in close.
In a first-of-its-kind study, researchers have found that energy harvested from the evaporation of water in US lakes and reservoirs could power nearly 70 percent of the nation’s electricity demands, generating a whopping 325 gigawatts of electricity.
Alongside the great strides being made in solar and wind, biophysicist Ozgur Sahin from Columbia University says natural evaporation represents a massive unexplored resource of environmentally clean power generation, just waiting to be tapped.
Continue reading “Evaporating Water Could Power Almost 70% of The US Electrical Grid” »
Sep 30, 2017
Vacuum company Dyson is building an electric car
Posted by Shailesh Prasad in categories: sustainability, transportation
Dyson says the car will be unveiled in 2020 and will be ‘radically different’ to other vehicles on the market.
Sep 26, 2017
Robot farmers have successfully planted and harvested barley
Posted by Dan Kummer in categories: food, robotics/AI, sustainability
No human stepped foot on the acre and a half barley farm. The manual labor in Hands Free Hectare was done entirely by robot farmers.
Sep 26, 2017
Dyson to make electric cars by 2020
Posted by Saúl Morales Rodriguéz in categories: sustainability, transportation
James Dyson announced Tuesday he was investing £2.0 billion ($2.7 billion, 2.3 billion euro) into developing an electric car by 2020, a new venture for the British inventor of the bagless vacuum cleaner.
The 70-year-old British entrepreneur said work began two and a half years ago on a project which he hopes will help tackle the scourge of air pollution.
“Dyson has begun work on a battery electric vehicle, due to be launched by 2020,” he said in an email to employees, referring to his eponymous company.
Sep 24, 2017
This is the world’s first solar-powered road and it’s absolutely genius
Posted by Shailesh Prasad in category: sustainability
Sep 24, 2017
100 Million Passengers Every Year
Posted by Shailesh Prasad in categories: economics, food, government, health, policy, sustainability
Sep 24, 2017
Particle Accelerators Could Be the Key to Cheaper Solar Panels
Posted by Shailesh Prasad in categories: particle physics, solar power, sustainability
It may seem counterintuitive, but we can use a particle accelerator to make solar panels. Here’s how.