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.
Clay fridges can slash global food waste substantially
Annual global food waste weighs in at over 1 billion tons. In developing countries food is often thrown away because of inadequate refrigeration. The Mitticool fridge is made from clay and might be the answer to the food storage problem. The Mitticool doesn’t require electricity, can keep Read More...
Solar energy for the entire world requires only small plot of land
How many solar panels are needed to power the whole world? A new graphic shows the exact plot of land that needs to be covered with solar panels to provide electricity to the entire world. And the surprising part– it’s not that large, just 158 square Read More...
Get used to this: Sustainable energy keeps setting new records
From Germany to the golden coasts of California, renewable energy records are being broken left and right. Global wind energy production has doubled 6 times in the past 9 years and solar power is up more than 50% in less than a decade. Fossil fuels still rule, but their future is rapidly changing. Read More...
Water based batteries can make electric cars even cleaner
Electric cars are great for reducing air pollution and global warming, but the materials used to make the car’s batteries come from chemicals that are damaging to the environment. That’s why this invention by a team of scientists from the University of Southern California is so important: a car Read More...
Scientists find a natural way to produce hydrogen
The clean renewable economy needs hydrogen to store energy. Electricity generated from photovoltaic panels during the day, for example, needs to be stored so that it can be used during the evening and night when the sun doesn’t shine and the panels don’t produce energy. So far the best way to Read More...
Renewable power output has almost doubled in last decade
Global renewable power production has grown from providing 800 gigawatts in energy in 2004, to 1,560 gigawatts in 2014, according to a new Renewable Energy Policy Network for the 21st Century report. Good news, but there’s still a way to go. The output of renewable energy stands at about 10% of Read More...
Economics for a blue planet
Gunter Pauli, author of The Blue Economy, on why blue is the new green. By Jurriaan Kamp and Marco Visscher Armed with an MBA from the French business school INSEAD, Gunter Pauli was in his mid-30s when he took the reins at Ecover, the Belgian cleaning products manufacturer that ran into Read More...
Hydrogen in every home
How the Japanese are trying to slash energy use and CO2 emissions—by installing fuel cells in people’s backyards. Winifred Bird | April 2009 issue Yasushi Kawamori has a power plant in his backyard. Not the kind that belches clouds of CO2 into the atmosphere, but the kind that’s small Read More...
Video: Life with a hydrogen fuel cell
Take a tour through the Kawamoris' house and see a brief interview with Mrs. Kawamori on having a hydrogen fuel cell that powers the family's home. Ode Editors | April 2009 Read More...
Norway puts hydrogen-powered cars on the road
Norway is creating a network of hydrogen filling stations to power cars that run on fuel cells. Diane Daniel | December 2008 issue From Oslo, where most Norwegians live, the nearest hydrogen filling station is about two hours away, first along a freeway, then down a smaller, winding highway and Read More...