In honor of World Water Day, here are the sobering numbers behind the billions of people living without safe water.

This stylish and durable trailer looks like a cross between a mini-Airstream and a horse trailer, and has a kitchen in the back.

The premature deaths are linked to excessive breeding.

Image via: Wakeland Housing & Development Corporation Los Vecinos, the first LEED-Certified Platinum, 100% solar-powered affordable housing in San Diego, offer 42-units of state of the art in green housing. The $17.6 million USD project opened its doors

There are 1.2 million real ones, but most of it is all about the show.

From 50 million tons of e-waste generated annually to 350,000 cell phones thrown away every day, the numbers behind our digital addiction are staggering.

Picture this: In 2016 the world generated enough e-waste to fill a line of 18-wheelers from New York to Bangkok and back.

Millions of Americans are applauding President Obama for naming five new National Monuments.

Proof that buildings from the 70s and 80s can be fixed well instead of demolished: Perkins + WIll gets the highest LEED score in America.

It is hard to imagine a greener product than natural tree bark.

Recycling aluminum uses about 95% less energy than making new one from bauxite ore, which compares very favorably with other types of recycling.

Yes, but we still have a problem, says Carl A. Zimrig in a new book "Aluminum Upcycled: sustainable design in historical perspective." Because we are using too much of the stuff.

Another reason that we have to use less of the stuff.

But hey, it's all in the interest of national security; Americans have to be ready to defend themselves from Canada.

Recycling isn't enough when demand for aluminum is soaring. We have to use less of the stuff and eliminate single-use packaging.

There is an alumina crisis right now. Making it is dirty and polluting, and it's back in the USA.

Built using aluminum, stainless steel and wood, this modular prefab is designed to be easily assembled and disassembled.

Remember how aluminum cans are "100 percent recyclable into pure aluminum"? They lied.

Even when made using hydro-electricity, aluminum production had a big carbon footprint.

Sort of, but there is less to it than meets the eye.

Recycled aluminum and silver get another shot at becoming beautiful with this handmade collection, created with Japanese origami papers.

Aluminum is replacing plastic to deceive "environmentally conscious consumers" into buying an equally damaging single use container.

Apple just bought its first load of greener aluminum. But you cannot call it carbon-free.

#ChangeTheNumbers - Entdecken Sie die Ergebnisse der Studie

Clayton uses an average of 40,000 tons of steel in the homes it builds annually. Find more facts about Clayton in this video.

Clayton uses an average of 40,000 tons of steel in the homes it builds annually. Find more facts about Clayton in this video.

Airlines want the government to loosen the amount of air service they're required to provide as the number of passengers on board hits the lowest since the 1950s.

Cortera Founder and CEO Jim Swift on how states are doing with their business reopening plans.

We do not know how long investors will be patient, how long markets will rise on the policy response, how low the economic numbers will fall and for how long.

Economists are looking at continuing unemployment claims data as the best labor market barometer as states reopen.

CNBC's Eamon Javers and political reporter Brian Schwartz join the "Power Lunch" team to break down the latest presidential campaign fundraising numbers.

Tom White, D.A. Davidson analyst and Ygal Arounian, Wedbush Securities, join "Closing Bell" to talk about markets.

CNBC's Tyler Mathisen talks about the historic job losses in April with Labor Secretary Eugene Scalia.