Today’s Solutions: April 22, 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.

Freshwater Stingray

World’s largest freshwater fish discovered in Cambodia

We often tend to think of stingrays as small and graceful, albeit dangerous, oceanic gliders. We marvel at them on nature shows and avoid them at the beach, but did you know they also inhabited freshwater?  Did you know they can grow to weigh over 660 pounds?  A 661-pound freshwater Read More...

Intestine decorative model with various nutritional probiotic supplements.

Probiotics could help in the fight against depression

As we have reported many times here at Optimist Daily, our gut microbiome is extremely influential in how our body operates. We’ve previously reported on the possible role this group of bacteria plays in medical conditions such as anxiety, strokes, and overeating. Now, a new study from the Read More...

Pigs

Study finds pigs and horses recognize positive and negative tones

Along the line, we evolved with certain animals and decided to keep their use but also their ability to connect with us. This is certainly the reason humans have bonded so closely with dogs and cats. As it turns out, this is the case with livestock as well.  A recent study from the University Read More...

Car bodies stacked at the junkyard.

Upcycling plastic from old vehicles into graphene for new ones

Did you know that the amount of plastic used in vehicles has increased by 75 percent in the past six years? This has led to the average SUV containing up to 350 kilograms (771 pounds) of plastic that could sit in a landfill for centuries. Thankfully, researchers from Rice University were inspired Read More...

view of planet earth from outer space

Google’s new tool lets us witness the planet changing in near real-time

Planet Earth is changing, transforming, and shifting faster than we can keep track of these days. Human development continues to spread, The Alps are turning from white to green, massive solar farms are being erected, and droughts are shrinking lakes and drying out rivers.  All of these major Read More...

Pills

Bone loss pills may lower risk of ovarian cancer

A new study found that medication for the prevention of bone loss may help lower women’s risk of developing ovarian cancer.  Researchers from the University of Queensland looked at the medical records of 50,000 anonymous Australian women and the medications they were taking. Drawing Read More...

Landscape with glacier in Svalbard at summer time. Sunny weather.

Scientists discover surprising creatures 1,600 feet beneath Antarctica

Scientists seeking to study how the river in the Ross Ice Shelf in Antarctica has been impacted by climate change were surprised to find a lot more than they bargained for. While on the mission, the team (made out of professors and experts from a range of universities and organizations) found Read More...

Panama City

Tree cities: regreening and making cities more climate-resilient

We decided to revamp a story about a wonderful solution: tree cities.  At The Optimist Daily, as you’ve probably guessed, we love solutions for urban green spaces. We’ve written quite a bit about these, with their ability to offset carbon emissions, help grow food, and help animals and Read More...

Sponge City

Making spongier and more climate-resilient cities

We decided to revamp a story about a wonderful solution, with a few updates.  The world’s cities and population centers are overwhelmingly located near water. This makes good sense since water is essential for living, and throughout history, people have built their settlements where water is Read More...

Planets

Astronomers discover nearby multi-planet system

Astronomers from the Massachusetts Institute of Technology have discovered a multi-planet system in our own galactic neighborhood. It is only 10 parsecs, or 33 lightyears, away from our own solar system, making it one of the closest systems to our own.  Discoverers dubbed the small and cool Read More...