06 Dec 2019

How We Can Recycle More Buildings

More than 35 billion tonnes of non-metallic minerals are extracted from the Earth every year.

Curator - Citi I/O 0
29 Sep 2019

Super Circular Economy: Can Waste Manage Waste?

Last February, I got the chance to visit a sustainability conference in a small town

Curator - Citi I/O 0
12 Jun 2019

As more developing countries reject plastic waste exports, wealthy nations seek solutions at home

Less than two years after China banned most imports of scrap material from abroad, many

Curator - Citi I/O 0
19 Dec 2018

If you recycled all the plastic garbage in the world, you could buy the NFL, Apple and Microsoft

This year, I served on the judging panel for The Royal Statistical Society’s International Statistic

Curator - Citi I/O 0
06 Nov 2018

Will Smart Technology Solve The Urban Waste Crisis?

The migration of people into the world’s urban centres has created crisis levels of waste.

Curator - Citi I/O 0
22 May 2018

This African City Is Turning A Mountain Of Trash Into Energy

Africa is the world’s fastest-urbanizing continent. But while city life has helped lift millions out

Curator - Citi I/O 0
06 Dec 2016

Why Our Cities Need To Go On A Resource Diet

Cities are the epicentres of human activity. They cover less than 2% of the earth’s

Curator - Citi I/O 0
06 Apr 2016

America Is So Wasteful, Time To Use It To Its Advantage

A few cities are using leftovers to power buses and buildings. Americans funnel 40 percent

Curator - Citi I/O 0
06 Jan 2016

Why Nanotech’s Best Benefits In Africa Begins With Our Waste

A cheap, easy to maintain, “green” toilet that uses no water and turns human waste

Curator - Citi I/O 0
22 Jul 2015

What Really Happens To All That Stuff You Recycle

In many municipalities around the country, the days of sorting your recyclables for curbside pickup

Curator - Citi I/O 0
23 Apr 2015

Grisly Secrets Of Dealing With Victorian London’s Dead

As well as sewerage, another “waste removal” problem plagued London in the 19th century: the

Curator - Citi I/O 0
18 Mar 2015

The Secrets In Sewage

What can a city’s waste reveal about the health of its population? The Centers for

Curator - Citi I/O 0