The resulting solar cell exhibits a power conversion efficiency of 15.2% and almost 80% transparency.
Category: sustainability – Page 417
Elon Musk says he’ll pay more taxes than ‘any American in history’
Elon Musk, the billionaire CEO of Tesla, is defending himself once again against public criticism. It is time for Tesla CEO Elon Musk to answer to questions regarding his income tax bill.
“If you opened your eyes for two seconds, you would know that I will pay more taxes than any American in history this year.” Musk tweeted earlier this week.
Tesla CEO Elon Musk tweeted a reaction to Massachusetts Sen. Elizabeth Warren’s criticism of him as Time Magazine’s Person of the Year for not paying his taxes.
Elon Musk says ‘I’ll be surprised if we’re not landing on Mars within five years’
Elon Musk has announced a new timeframe for his massive Mars project, and it is a lot closer than you would believe.
In an article published Monday, Musk said, ‘I’ll be surprised if we’re not landing on Mars within five years.
Musk, the 50-year-old SpaceX founder and CEO who was selected Time’s Person of the Year, has grandiose ambitions for Mars: a self-sustaining metropolis with solar-powered hydroponic fields where people may live indefinitely, 34 million miles from Earth.
Swiss smart yacht points solar-hydrogen power toward “limitless” range
Combining two forms of sustainable energy into one range-extending propulsion system, Swiss Sustainable Yachts’ clean, quiet catamaran promises to jumpstart a future in which the word “range” becomes obsolete. The 64-footer harnesses solar energy to create its own hydrogen, powering a fuel cell-electric drive to potentially limitless autonomy, so long as the sun is shining and the captain isn’t pushing past cruising speed. The Aquon One might prove the ultimate luxury smart yacht of the sustainable generation.
The Aquon One has a 134-hp fuel cell-powered electric engine in each hull. Swiss Sustainable Yachts (SSY) explains that it opts for hydrogen power because of its light weight as compared to batteries or fossil fuels, long-lasting storage capability and lack of harmful emissions. Also critical to the Aquon One design is hydrogen’s ability to be created sustainably, in this case using a solar-powered electrolyzer that splits hydrogen from desalinated seawater. The 689 square feet (64 sq m) of solar panels covering the Aquon One’s hard-top generate all the electricity needed to develop the hydrogen, which is then stored away in carbon tanks.
The Aquon One does include a small battery bank for short-term energy needs, both for propulsion and onboard electrical usage. The hydrogen, on the other hand, is compressed and designated for longer-term use. SSY claims the hydrogen tanks hold more than 100 times the energy of a full-size modern battery system, offering more range and capability than it would get by expanding the size of its battery.
Habitability in the Solar System
Moderator: Michael Wall.
Panelists: Kennda Lynch, Abigail Fraeman, Morgan Cable.
Part of the Earth at the Crossroads conference held on Nov. 18, 2021.
Tantalizing new discoveries suggest that we are probably not alone in the universe. And yet, as Enrico Fermi first put in 1950: where is everybody? Are habitable worlds rare, unlikely, and therefore cosmically precious? Or is life easily overwhelmed by changing planetary conditions? Do technological societies in particular face an inevitable “Great Filter” that causes their extinction? These questions link the search for extraterrestrial life to the urgent environmental challenges facing our own civilization, from deadly pandemics to human-caused climate change. On November 18th, Georgetown University and the SETI Institute will unite scholars, journalists, artists and activists in conversations that explore what the search for alien life may reveal about the future of life on Earth. These conversations will be open to Georgetown students and will be broadcast to the public. They will culminate in a roundtable debate intended to draft a proclamation on the state of Earth’s environment and its future potential in a cosmic context.
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Graphene: The Wonder Material of the Future
There is a new wonder material in town, and its name is graphene. Since it was first successfully isolated in 2004, graphene, with its honeycomb-like 2D structure and its wide gamut of interesting properties, has been keenly studied by material scientists.
This naturally transparent 1 millimeter thick lattice of carbon atoms has multiple applications and could even one day potentially solve the world’s water crisis.
The faith in the material is so strong that, according to numbers projected by Fortune Business Insights, its market value will be $2.8 billion in 2027.
A New Flexible Solar Panel Material Is 15 Times Thinner Than Paper
And it could work in wearables and light aircraft.
Researchers at Stanford University are developing an efficient new solar panel material that is fifteen times thinner than paper, a press statement reveals.
Made using transition metal dichalcogenides (TMDs), the materials have the potential to absorb a higher level of sunlight than other solar materials at the same time as providing an incredibly lightweight alternative to silicon-based solar panels.
Searching for silicon alternatives The researchers are part of a concerted effort within the scientific community to find alternative solar panel materials to silicon. Silicon is by far the most common material used for solar panels, but it’s heavy and rigid, meaning it isn’t particularly well suited to lightweight applications required for aircraft, spacecraft, electric vehicles, or even wearables.
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Hydrogen Airships Promise Zero Emissions at Quarter the Price of Plane Cargo
They could be “critical in the fight against climate change.”
A California-based startup called H2 Clipper wants to resurrect the hydrogen-filled airship as a form of mass transport. The key difference is that it won’t be transporting people, it will be transporting cargo, a press statement reveals.
The company aims to kickstart a green global cargo network by leveraging the world’s renewed willingness to try alternative forms of transport following the IPCC’s dire climate change report for 2021.
H2 Clipper claims its cargo airships can carry 8–10 times the payload of the best cargo plane over 6,000 miles (9,656 km), and it can do so at a quarter of the price. They will have a payload capacity of approximately 340,000 lb (150,000 kg) sitting in up to 265,000 cubic feet (7,530 cubic meters) of cargo space.
As for speed, the H2 Clipper would travel at a cruising speed of 175 mph (282 km/h), meaning it would move close to ten times faster than a cargo ship — though it would obviously lag behind a cargo plane in that department. The main advantage over today’s cargo planes is that the H2 Clipper produces zero carbon emissions.
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