With the addition of minarets, Hagia Sophia was converted from a Christian basilica to an Islamic mosque.
Adaptive reuse and recycling of heritage architecture may be all the rage, but are not new. Making new buildings from old has a long history in the ancient world.
From turkeys to salmon and brussels sprouts, modern living is putting mounting pressure on the festive feast.
Every little helps, but saving the environment requires a global effort.
Think of all the resources needed to transform Shenzhen, a fishing town 35 years ago, into a megacity of more than 10 million people.
Our cities need to become much more efficient not just to conserve precious resources but to improve the economy, wellbeing and resilience to environmental change and disasters.
How we can change the business model of a £50 billion industry to make clothing work better for everyone.
Awaiting a more useful life?
Richard Webb/Wikimedia Commons
The world's landfills are growing, which has prompted the search for new industrial processes that can use everyday waste items in some surprising ways.
Michal Jastrzebski / shutterstock.com
As a remedy to rampant consumerism and the throwaway culture of fast-fashion, a few clothing brands actively encourage their customers to buy less.
New, eco-friendly ways of recycling tyres are needed.
Used tyres pose a serious environmental challenge. So far, traditional recycling methods have proved insufficient to solve the problem. New, eco-friendy alternatives are now being explored.
Gone to waste: not enough of Australia’s obsolete electronics are being recovered.
AAP Image/Alan Porritt
Australia is among the world's top ten users of electronic and electrical products. But our systems for recycling the resulting 'e-waste' fall a long way short of other rich nations.
The high street chains cop the heat, but shouldn't you be doing your bit too?
A dress by designer Iris van Herpen, who, with her runway designs, challenges common fashion norms and beliefs.
Fast fashion is the second most wasteful industry on Earth. But with the creation of dresses that charge cellphones and clothes made from recycled bottles, we could be on the verge of a green fashion revolution.
There’s a lot to consider before you can be sure a shipping container home is your best affordable housing option.
Have you thought about usable space, re-engineering, structural integrity, contamination, insulation and comfort? If not, you need to before jumping into building a home from shipping containers.
Ready for recycling? These cans are – thanks to the EU’s Waste Directive.
PORNPIPAT CHAROENTHAI / shutterstock
From recycling to air pollution, eco-friendly European laws have a big impact.
Two rubbish options.
Let's be honest, you want assurances that someone is going to take away all those campaign leaflets on June 24.
Drink containers are the biggest contributors to rubbish in Australia.
Litter image from www.shutterstock.com
Refunds for drink bottles and cans get litter out of the environment – but industry remains opposed.
We want products that last, it's up to manufacturers to provide us with the information we need to buy them.
Maybe Sesame Street could help out City Hall.
The British capital is more wasteful than anywhere else in England.
Waste not want not.
Hull City Council claims poor recycling habits are costing it £50,000 a month, so now they're taking action by removing resident's bins.
Tokyo International Youth Hostel.
Long-term drought and water shortages in many parts of the U.S. are spurring interest in ways to reuse graywater -- the water that drains from sources such as showers, bathtubs and washing machines.
Despite a series of EU laws on waste management, some countries are still a bit rubbish.