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Replacing fossil fuel with hydrogen seems like an ideal solution to make transportation environmentally friendly and to provide a backup for intermittent energy sources like solar and wind. But how environmentally friendly is hydrogen really? And how sustainable is it, given that hydrogen fuel cells rely on supply of rare metals like platinum and iridium? In this video, we have collected all the relevant numbers for you.

👉 Transcript and References on Patreon ➜ https://www.patreon.com/Sabine.

Wind turbine blades are recycled into reinforcement fiber that increases the strength and overall durability of concrete.

Wind turbines are great for producing energy but become quite wasteful once their lifetime has expired, as the materials used to construct them simply don’t biodegrade very well.

One company is seeking to do something about that according to a report by electrek published on Thursday.


XtockImages/iStock.

An intense blast of energy that was detected on Earth appears to have come from two colliding and collapsing stars, according to scientists.

Researchers looking through archival observations of gamma rays say they have found “oscillating” signals in two bursts of energy.

They were found in old data taken from an out-of-use experiment in orbit around Earth.

Worried about a blackout during extreme weather? San Francisco-based EcoFlow Tech offers a battery backup system that can now power your home for an entire week and this includes heavy appliances like washing machines, coffee machines, and hairdryers too. The system is completely portable and can also be used to power your RV during an off-road trip.

Energy solutions such as Tesla Powerwall, which can be recharged using energy from sunlight but EcoFlow Tech is taking it a step further by delivering a power backup system that is entirely portable.

Under normal temperature and pressure conditions, the reactor could efficiently convert plastic bottles and CO2 into CO, syngas, and glycolic acid.

Researchers from the University of Cambridge developed a first-of-its-kind system that can simultaneously convert plastic waste and greenhouse gases into two chemical products by drawing energy from the sun.

The results are reported in the journal Nature Synthesis.


Onurdongel/iStock.

Apple today shared an update on its subscription businesses and global App Store, noting that the tech company has now paid out a record $320 billion to app developers since 2008 — a number that reflects the revenue apps have generated, minus Apple’s commission. In addition, the tech giant said it now has more than 900 million paid subscriptions across Apple services, with subscriptions on the App Store driving a “significant” part of that figure.

The company’s App Store in 2022 faced one of its tougher years since its founding, with lawsuits and antitrust actions aimed at limiting its market power.

The satellite had an expected two-year-service life, but it blew past that mark. “For 21 of its years in orbit, the ERBS actively investigated how the Earth absorbed and radiated energy from the Sun, and made measurements of stratospheric ozone, water vapor, nitrogen dioxide, and aerosols,” NASA said.

Spacefaring machines that come back to Earth are subject to an intense reentry process. NASA expected most of ERBS to burn up, “but for some components to survive the reentry.” The return trajectory over a body of water means anything that wasn’t toast likely fell harmlessly into the sea.

The satellite’s uneventful fall back to its home planet is a bit of good news at a time when orbital space is increasingly crowded with junk, debris and defunct satellites. ERBS went out in a blaze of glory after its distinguished service to science.

A powerful solar flare hit Earth last week, causing a radio blackout over parts of Australia and the South Pacific last week, CNET reported. This is one of the most powerful flares seen since October last year and might be a sign of what is coming next.

A solar flare is an eruption of electromagnetic radiation from the Sun’s surface. According to the European Space Agency, flares occur when energy stored in magnetic fields on the solar surface is suddenly released.