Today’s Solutions: March 20, 2026

Science

From mathematics and AI to medicine and psychology, The Optimist Daily features the latest news on discoveries, technological advances, and breakthroughs in the world of science. Our Science section is here to engage and enlighten you.

Polish electric car producer o

Polish electric car producer on horizon?

As I just wrote, two Polish cities (Kraków and Wrocław, where I live) are each planning to launch 200-car electric carsharing programs. Furthermore, a startup is aiming to launch electric carsharing in Poznan, Warsaw, Kraków, Wrocław, Tricity, and Łódź; and Read More...

Tesla Motors and SolarCity rea

Tesla Motors and SolarCity reach deal to merge

Elon Musk took another step in combining his electric-car company with his solar-energy company, announcing on Monday that the two had reached a $2.6 billion agreement. Independent members of both boards approved a deal in which the car company, Tesla Motors, will acquire SolarCity for stock, Read More...

Salt, not batteries, is the so

Salt, not batteries, is the solution to our energy storage needs

In the desert of Nevada stands the most advanced solar power plant in the world that has solved the greatest predicament that comes with harnessing the power of the sun: energy storage. Within a tower surrounded by ten thousand silvery glass panes is a mixture of potassium and sodium nitrate that Read More...

Mercedes debuts world’s

Mercedes debuts world's first fully electric big rig

Mercedes-Benz has unveiled the world's first big rig that drives without a drop of fuel. The new Mercedes-Benz Urban eTruck has an electrically driven rear axle and is powered by three lithium-ion battery modules. The zero-emission vehicle has an admissible total weight of up to 26 tonnes with a Read More...

“Australia’s use o

"Australia's use of coal is falling and that is not a bad thing"

Australia’s new environment and energy minister, Josh Frydenberg, says coal will be a declining part of Australia’s energy mix because of inexorable market forces – but he insists the Coalition’s much criticised Direct Action policy is up to the mark, and will allow Read More...

Water: America’s largest

Water: America's largest renewable source is only getting bigger

Hydropower may not get as much attention as solar and wind get, but it’s actually America’s single largest renewable energy source. Hydropower currently produces six percent of the total energy needs of the U.S., and there is much potential to increase the electricity-generating capacity as a Read More...

From wasteland to solar park:

From wasteland to solar park: What Ukraine plans to do with Chernobyl

Ukraine will soon generate power again in the 1,000 mile square exclusion zone that surrounds the site of the Chernobyl atomic fallout, but this time it won’t be nuclear energy. With the land being so cheap and high-voltage lines already in place, the Ukranian government plans spend $1.1 billion Read More...

Mercedes challenges Tesla with

Mercedes challenges Tesla with its own electric-truck pledge

Mercedes-Benz outlined plans to start selling an electric heavy-duty truck in about five years, a week after Tesla Motors Inc.’s initial sketch on battery-powered commercial vehicles failed to impress investors. The 26-metric-ton Mercedes-Benz Urban eTruck will have a range of about 200 Read More...

Electric car economics are sho

Electric car economics are showing some sparks

Pushed by federal regulations, automakers are spending billions to develop new all-electric cars. But with gas prices staying relatively low, consumers aren't buying the electric offerings available now. Except for the glamorous and expensive Tesla Model S, electric vehicle sales for the first half Read More...

New electric car battery deliv

New electric car battery delivers lots of power with little weight

The lithium-air batteries found in electric cars haven’t quite reached their full potential yet. They degrade rather quickly and waste a lot of energy input as heat, but scientists may have found a better way to power clean energy vehicles. Scientists have engineered a lithium-oxygen battery that Read More...