Today’s Solutions: December 20, 2025

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.

Copenhagen could become the fi

Copenhagen could become the first carbon-neutral capital city by 2025

The capital cities of the world need to take a good look at that ambitious goal that Copenhagen is attempting to achieve. By 2025, the Danish capital wants to be carbon neutral by generating more renewable energy than it consumes from fossil fuels. Technologically speaking, Copenhagen has the Read More...

Simply heating stones could he

Simply heating stones could help solve the problem of storing clean energy

Energy storage has long posed an efficiency problem for renewable energy transformation. But lately, new technologies have been emerging that could solve the matter. One of those technologies comes from Denmark and involves a giant facility that heats up stones to 600 degrees as a means of storing Read More...

Puerto Rico passes historic 10

Puerto Rico passes historic 100% renewable energy legislation

After Hurricane Maria tore through Puerto Rico in 2017, the island was without energy for months, making it an incredibly pain-staking process to deal with the aftermath of the tropical storm. To make sure that never happens again, Puerto Rico has passed a bill that sets the island on a path to Read More...

Oslo is installing the worldâ€

Oslo is installing the world’s first wireless electric car charging stations

When it comes to electric vehicles, no one is further ahead of the game than Norway. The Nordic country has the highest percentage of residents driving electric cars, and the government is even mandating that all new cars sold in the country be all-electric by 2025. Now Norway is taking it one Read More...

Researchers develop nifty devi

Researchers develop nifty device that can use waste CO2 to purify wastewater

Access to clean water is something that many of us take for granted, but it's a serious problem across much of the world. Now researchers at the University of New South Wales (UNSW) Canberra have tested a new method for sterilizing water using hot bubbles of carbon dioxide, which they've found to Read More...

Meet the fired Kentucky coal m

Meet the fired Kentucky coal miners who are picking up a new trade

Like the top story in today’s edition of the Optimist Daily already points out, coal is losing in the battle to remain a relevant energy source as renewables such as wind and solar have become cheaper. Still, while it’s good news for the planet that we’re lessening our dependence on coal Read More...

New study finds solar or wind

New study finds solar or wind energy is cheaper than coal in most of America

According to a major new study, the clock is running out for coal energy. Around three-quarters of US coal production is now more expensive than solar and wind energy in providing electricity to American households. The study’s authors used public financial filings and data from the Energy Read More...

Shell rebrands purchased UK en

Shell rebrands purchased UK energy utility and makes it 100 percent green

While there are plenty of reasons not to love energy giant Shell, they are taking major steps towards implementing more renewable energy. An example of which takes place in the UK where more than 700,000 homes in Britain are now enjoying 100 percent renewable energy thanks to Shell. The move Read More...

Parkinson’s smell test could

Parkinson’s smell test could lead to earlier detection of disease

A couple of years ago, a bizarre news story broke about a Scottish woman by the name of Joy Milne who could detect whether or not someone had Parkinson’s disease through smell. Milne first noticed the “musky” smell on her husband Les, who was years later diagnosed with Parkinson’s Read More...

Scientists are putting backpac

Scientists are putting backpacks on pigeons to collect climate data in cities

While you may not see the positives that pigeons can bring to the world, researchers at the University of Birmingham in the United Kingdom do. The researchers have developed a tiny set of sensors that can be strapped onto the backs of pigeons in order to collect data on urban microclimate. It may Read More...