The new zero-emission train, known as Zemu, will run through an area that has long suffered from poor air quality. Will it be the start of a clean energy rail movement in the US?

Pilot scheme in Amazon communities of central Peru aims to help people choose a more sustainable way of living

Initial results show homes in Sierra Leone’s capital fitted with heat-reflective roofing sheets can be up to 6C cooler

The ground is humming with geothermal energy that could heat or cool our homes – and now the big US utilities are starting to take note

Rising block tariffs and national energy guarantee systems are almost unknown in Europe – but are flourishing elsewhere

The country has long been the world’s biggest market – but the government’s interest is more geopolitical than environmental

A sustainable project aims to repurpose encroacher bush to create building blocks to solve Namibia’s housing crisis

After success of bottle deposit schemes, some retailers are trying to widen culture of reuse – and start tackling Europe’s waste problem

With lagoons once choked by rubbish, pressure from the appalled community led the government to ban certain single-use products

Bangalow Koalas and private landholders have planted more than 377,000 trees across the region

Born out of an anti-car protest in 1974, the Colombian capital closes many roads to cars every Sunday, leaving them free for bikes, skates and pedestrians

Course in Burkina Faso uses just 200 to 300 litres a day, while US peers suck up millions

Thanks to soil bioengineering in a village in north India, a submerged road was accessible in less than one week, according to officials

Amsterdam is home to 45,000 sq metres of ‘blue-green’ roofs, which absorb rainwater and allow it to be used by building residents to water plants and flush toilets

Phoenix broke several heat records last year. Now Grant Park, which has inequitable tree cover, is seeing a tree-planting drive that promises some respite from 100F temperatures

National competition has goal of helping Netherlands reach environmental targets by removing garden paving

A group of hospitals serve up a menu rich in plants – and say they have had few complaints

Established 24 years ago, the Carrifran Wildwood has been credited with inspiring the current surge of rewilding projects across the UK and beyond