Today’s Solutions: January 20, 2025

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.

These algae curtains combat ai

These algae curtains combat air pollution in urban environments

Here at The Optimist Daily, we're highly interested in the expansion of algae as an eco-friendly component of a variety of products that protect the environment and reinforce the value of sustainable, eco-conscious living. Algae has been used to make biodegradable sequins and more sustainable Read More...

This partnership aims to creat

This partnership aims to create net-zero concrete out of industrial waste

In order to reach the climate targets of the Paris Agreement, we urgently need to find a greener alternative to concrete — the most widely used man-made material in the world — whose key component (cement) emits about 8 percent of global CO2 emissions. Narrowing in on this sustainability Read More...

This team of bird paramedics i

This team of bird paramedics is saving migratory species in New York City

Large skyscrapers pose a dangerous threat to migratory birds who often cannot see directly in front of them while flying. In large urban areas, like New York City, thousands of birds collide with skyscrapers each year, but the bird paramedics of New York are here to help.  About 30 volunteers Read More...

Glasgow to plant 10 saplings f

Glasgow to plant 10 saplings for every resident in reforestation project

A global pandemic has opened our eyes to the value of engaging with nature and having local green spaces. On top of the environmental benefits of soaking up CO2 emissions, having ample tree cover in urban spaces is connected to lower rates of obesity, asthma, and diabetes as well as improved mental Read More...

This futuristic bus shelter is

This futuristic bus shelter is designed to improve air quality in cities

Air pollution is one of the most pressing public health challenges facing urban areas today, so designing infrastructure that tackles this problem is key to ensuring a sustainable future for our cities.  We’ve previously seen such innovations in the form of air-purifying advertising banners, and Read More...

Maldives is building a floatin

Maldives is building a floating city to adapt to climate change

With more than 80 percent of the country’s land area lying less than one meter above sea level, Maldives is particularly vulnerable to the effects of climate change. The archipelago, hosting 25 low-lying atolls in the Indian Ocean, is also the lowest-lying nation in the world — which means that Read More...

Denver will be home to North A

Denver will be home to North America’s largest sewer heat-recovery project

Did you know that the hot water you send down the drain can be used to regulate the temperature of buildings? Called sewer heat recovery, the process essentially captures warm water from showers, washing machines, and dishwashing and stores it in a heat-consistent pit. This stored water is then Read More...

This car-free neighborhood enc

This car-free neighborhood encourages residents to walk and cycle more

A while back, we shared a story about how in addition to reducing air pollution and making streets safer, car-free zones can also help build more connected thriving communities. Well aware of the benefits of designing people- rather than car-friendly neighborhoods, a team of designers recently Read More...

Papilio is a self-powered stre

Papilio is a self-powered street lamp designed to reduce light pollution

Human innovation has driven our civilizations forward, but oftentimes at the detriment of other species. For instance, conventional lights and street lamps allow people to work and navigate at night, but they can confuse nocturnal life and attract pollinators, killing them in the process. Tobias Read More...

This gifted dog is helping a T

This gifted dog is helping a Texas fire department by sniffing out arson

From preventing the spread of COVID-19 to helping turtle conservation and protecting wildlife, dogs continue to prove themselves as humans’ most devoted helpers. One of the latest cases that further adds evidence to this fact involves Sheldon, a dog that’s helping a fire department in Texas Read More...