Today’s Solutions: April 23, 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.

Graduation

Be bored, then get going

“Boredom is just the reverse side of fascination.”  — Arthur Schopenhauer Congratulations, graduating classes of 2022! Being young, with a freshly minted degree, you probably feel invincible, like you can do anything.  There’s a lightness and exuberance in your step, and you are full Read More...

Tel Aviv e-scooter

Tel Aviv is becoming an e-scooter city

No two cities are the same, and each one has its own particular changes to make to achieve its climate goals. New York is making plans to become “spongier” to handle excess water. Panama City, Florida is transforming into a tree city, planting over 100,000 new trees, and Tel Aviv, Israel aims Read More...

X-ray red heart of human with photoshopped heart shaped outline.

This miniature heart could help cure heart disease

The heart, in a way, is the body's motor. Its job is to pump and circulate blood around the body to provide oxygen to all of our other tissues. Because of its key role, cardiac trouble and dysfunction mean serious health concerns. This is responsible for one in every four deaths annually in the Read More...

How Paris is quieting its nois

How Paris is quieting its noise pollution

Those of us that live in a city love it for the layers and layers of life, light, and vibrancy that come from a busy and populous environment. While it is an exciting and bustling place to live, we can also pay a price living in a city when, say, we’re just trying to go to sleep.  Noise Read More...

Therapy

ACTV therapy model reduces recidivism for domestic abuse

There is a growing trend in the United States to reduce crime and recidivism by educating, treating, and reforming individuals rather than punishing them with harsh sentences. This takes on many forms. The First Step Act, for instance, seeks to reduce existing sentences and reincarceration through Read More...

Closeup of rattlesnake head and tail.

What is the difference between poisonous and venomous snakes?

Snakes are often associated with danger due to their sharp fangs and potentially lethal bite. Often when somebody sees any snake at all they jump for fear that it could be lethal. However, there isn't always a need for fear, as many snakes are just venomous and not poisonous. What does poisonous Read More...

Person getting food at night from the fridge.

Your gut biome may be responsible for your food cravings

Scientists continue to discover more and more processes that the gut microbiome influences. This population of microbes - including bacteria, fungi, viruses, and their genes - naturally live inside animal guts, interacting with the host body and each other to regulate processes. Researchers have Read More...

Bug Food

Insects and lab-grown meat could reduce environmental impact by 80 percent

We at The Optimist Daily have written a lot before about the environmental benefits of lab-grown meat and insects as an alternative protein source, and the body of research for this cultural and scientific protein shift keeps growing.  A new study published in Nature Food found that replacing Read More...

MIT scientists develop accurate behavior-predicting model for autonomous cars

How autonomous cars may predict road behavior in the future

To safely deploy autonomous vehicles on our roads, we first must ensure that they can accurately predict the movement of pedestrians, cyclists, and other fellow drivers. With so many people and vehicles on the roads today, though, behavior prediction can be a really daunting task. MIT researchers Read More...

Thin Speakers

MIT team creates high-quality, paper-thin loudspeaker

We live in a time when concepts are turned on their heads. We’re starting to pull carbon out of the atmosphere, instead of emitting it. We’re adapting our cities to wildlife, instead of trying to kick animals out. And we’re making technology more efficient by making it smaller, instead of the Read More...