Today’s Solutions: December 23, 2024

Sustainable Urban Development

With cities expected to host about 70 percent of the world's population, sustainable urban development is key to making communities worldwide more resilient against the growing threat of climate change. Find out about the latest urban practices from across the world aiming to make our cities more sustainable and inclusive in these good-news stories from The Optimist Daily.

Tropical jungles of Southeast Asia in august

New platform CTrees calculates the carbon in every tree on Earth

New startup CTrees uses artificial intelligence to track exactly how much CO2 the world’s three trillion trees are storing, thereby determining the extent to which trees are helping the planet. CTrees, which was developed by a team of NASA scientists, has a very simple motto: “see the forest Read More...

Breathtaking sunset over Grote Market in Haarlem

Dutch city is the first in the world to ban meat ads in public spaces

The undeniable environmental cost of keeping livestock and producing meat (along with the many health benefits of a plant-based diet) are compelling reasons for many to cut out or at least reduce their meat consumption.  However, the average meat-lover's resolve to go veggie is probably Read More...

Aerial photo above solar panels

This crop actually benefits from being shaded by solar panels

Solar panels often take up a lot of real estate that is also optimal for growing crops (flat land with access to lots of sunlight). Instead of having panels compete with plants, there is a growing field called agrivoltaics that studies how solar power and agriculture can exist together and even Read More...

Abstract Battery Charging Icon form lines and triangles, point connecting network on blue background.

MIT researchers develop cost-effective battery made of common materials

The environmental benefits of using electricity rather than fossil fuels to power our world goes without saying— however, the process of electrifying everything has its obstacles. One of the greatest obstacles is the limited resources of lithium, nickel, and cobalt which are all used to create Read More...

11 May 2019: Girls from Chad pour clean drinking water into a water bottle.

Hindou Oumarou Ibrahim confronts climate crisis with Indigenous wisdom

According to Hindou Oumarou Ibrahim, “if you’re born as an Indigenous person, you’re born an activist, because you’re born with the problems surrounding your community.” Ibrahim is a native Mbororo woman from Chad, a country that the UN describes as “one of the world’s most Read More...

Young woman in yellow raincoat having fun riding a bicycle in Amsterdam city

Study shows: if we biked like the Dutch, global emissions would drop dramatically

A new study from researchers at the University of Southern Denmark has determined what we already knew— cycling is much better for the environment than driving conventional internal combustion vehicles. The study took a look at the bike-loving Dutch, and quantified just how much global carbon Read More...

 The man throws leftover vegetables from the bowl into backyard compost bin.

Queens is soon to rule in the world of composting!

Starting in early October of this year, Queens, New York will proudly be running the nation’s grandest composting program.  The 2.2 million New Yorkers living in Queens will have a weekly pickup service for organic waste. This means that yard debris and food scraps, and food-soiled paper Read More...

Man holds a fuel dispenser with hydrogen logo on gas station. h2 combustion engine for emission free eco friendly transport.

Are hydrogen fuel cell cars a better choice than plug-in EVs?

There is no doubt that The Optimist Daily is excited about the increasing number of electric vehicles on the roads. In the US, infrastructure for plug-in EVs has been fleshed out in many regions, easing drivers’ range anxiety.  With new tax credits in the Inflation Reduction Act, we can expect Read More...

automobile congestion in the morning rush hour

Mathematicians can make traffic jams history—all we have to do is listen to them

It may be difficult to find things that we all agree on—but we’re confident that everyone will agree on this: traffic jams suck! What makes traffic even more irritating is that, according to traffic flow experts, most of the congestion on the road is completely unnecessary. According to Read More...

Chicago Skyscrapers Skyline View from Lincoln Park with Sunlight

Chicago pledges to run all city operations with clean energy

As countries large and small struggle with the undeniable impacts of climate change, more and more cities are taking a lead in mapping out strategies to reduce greenhouse gas emissions. One particularly fruitful avenue to follow involves stamping out the excessive burning of fossil fuels. Well, the Read More...