London Mayor Sadiq Khan promised electors that he would be the 'Greenest Mayor ever'. In spite of his apparent support for a new Thames road crossing in East London and an expanded London City Airport, he still has huge opportunities to make good his pledge. And Green Assembly Members will be working hard to make sure he does.
First we heat up cold water for baths, showers and washing, write Jan Hofman & Laura Piccinini. Then we chuck all that precious heat down the plughole. So how about recycling our waste heat to warm up water on its way to the boiler or hot water tank, cutting bills and emissions? Or on a larger scale, use the sewage from entire communities as a free energy source for heat pumps?
A proposed redesign of the Natural History Museum's grounds in London would cause some unfortunate collateral damage, writes Gary Grant - the destruction of the Museum's 21 year-old wildlife garden, an ecological jewel in the heart of London which features over 3,000 species of plant and animal in just one lovingly tended acre. The Museum must think again!
Bristol's decision to trial vinegar as a weedkiller in place of glyphosate certainly grabbed headline-writers' imaginations, writes Harriet Williams. But with a wide choice of proven chemical-free weed control strategies available, might this experiment be 'set up to fail'?
Stop Killing Cyclists are staging a protest in London on 27th April to demand an end to the UK's intolerable air pollution, writes Donnachadh McCarthy. With an estimated 40,000 people dying every year from filthy air, much of it caused by diesel cars, all are welcome to join in, denounce the government's 'polluters' friend' policies, and insist on swift action to stop the needless deaths.
Low Emissions Zones have their place in cleaning up the UK's worst air pollution hotspots, writes Richard Howard. But we also need to adopt fiscal measures to encourage a shift away from diesel vehicles, at once delivering cleaner air, increased tax revenues, and lower carbon emissions.
The lead poisoning crisis in Flint, Michigan is just the tip of a vast iceberg of lead contamination afflicting mainly urban black communities, writes Leif Fredrickson. A rigid 'race bar' on postwar suburban housing and mortgages left black families in inner cities, exposed to flaking lead paint in run down housing, leaded gasoline residues and lead pipework. Now is the time to correct this shocking historic injustice.
Today's threats of legal action by ClientEarth against the UK Government highlight the problem of London's poisonous air, which is killing some 10,000 people a year, writes John Weeks. Fortunately there are simple, low cost, effective measures that could be taken to bring about big improvements to the city's air quality, fast.
Just as rich and poor are separated by walls of money, the Latin American trend is to add physical walls to keep wealthy and deprived communities entirely apart, write Camillo Boano & Belen Desmaison. On the one side people enjoy lavish homes, security, public services and piped water. On the other residents live in tiny shacks built of scraps, in a desert landscape ruled by criminals.
Britain's 20th century architecture is in danger of obliteration, writes Sebastian Messer, with a 'new brutalism' that holds that socially deprived council estates are fit only for demolition. But these buildings are an important part of our cultural heritage, and more than that, they provide affordable housing to millions of people.
Erdogan's horrific 'war on terror' in the Kurdish cities of Eastern Turkey may have a silver lining, writes Defne Kadıoğlu Polat - at least for property developers and ruling party insiders. Plans are already under way for 'urban renewal' projects that will see the valuable real estate cleansed of buildings and people by the war developed into luxury apartments and shopping malls.
Demolishing 'sink' council estates is no way to solve social problems, writes Loretta Lees. All it does is force low income communities out of affordable housing, and open valuable urban sites up for profitable redevelopment. But then, maybe that's the point?
The world's big cities are choking with pollution and endless traffic jams, writes Colin Todhunter - except one. Copenhagen, faced with these problems half a century ago, decided to act. Now it is showing the world that cycling is not just the basis of a sustainable transport strategy, but is key to making our cities clean, green, human and livable. May the global revolution unfold ...
The apparent conspiracy by the UK government and its agencies to conceal the real cause of death of 7-year old Zane Gbangbola may go right up to Prime Minister David Cameron, writes Paul Mobbs. He was chair of the COBRA emergency committee at the time when it appears to have held back the truth that he was killed by cyanide from the toxic landfill site his home was built over.
As temperatures soar in the Persian Gulf, modern buildings rely on energy-guzzling air-conditioning to maintain tolerable temperatures, writes Amin Al-Habaibeh. But traditional buildings stay cool passively using shade; wind and thermally driven ventilation; and naturally insulating, reflective materials. For a sustainable future, modern architects must revive the ancient knowledge.
The demand for ever more air travel and new runways comes from a small minority of frequent flyers, writes Keith Taylor - the 15% who take 70% of flights. So we can reduce that demand with a frequent flyer tax - while making it cheaper for ordinary families to enjoy an annual holiday abroad.
Local authorities around the world are going pesticide-free following an initiative by a small town in Canada 25 years ago, writes Keith Tyrell. Now the movement is coming to the UK, with campaign groups setting up in towns, cities and rural communities to keep pesticides out of our streets, parks, playgrounds and allotments.
The Garden Bridge will offer a new kind of green space in the heart of the city, strengthening London's status as the greenest capital in Europe, writes Bee Emmott. It will benefit the health and wellbeing of local communities and visitors alike.
It sounded wonderful: a futuristic 'garden bridge' across the Thames dripping with flowers and foliage, writes Will Jennings. But really it's a private enclosure of valuable public space, mature trees and views, backed by £60m of taxpayers money, that delivers no benefits to London's wildlife, environment or transport needs.
Detroit is the site of a neoliberal experiment that's already being repeated elsewhere, writes Chris Grove, with unpayable debt used to force the privatization of public services and the terminate democratic power and accountability. But as the city's poor find themselves cur off from water, a new, wider conception of human rights is emerging from the wreckage.
The UK Government has ditched the requirement for new homes to be 'zero carbon' from April 2016, writes Gordon Walker. With builders already geared up to meet the challenge, this needless reversal will raise energy bills and carbon emissions for a century or more to come, and send out all the wrong signals for the Paris climate talks.
When Oxeye daises looked like taking over her mini-meadow, Jo Cartmell was tempted to intervene. But instead, she held back and let nature take its course. Now, a few seasons later, the floral diversity has only increased, taking in some unexpected but welcome arrivals - along with their insect companions, all making their home on what used to be an unloved patch of lawn.
The NHS is one of our greatest institutions and we must defend it to the hilt, writes Natalie Bennett. But to build the healthy society we all want and deserve, we need joined up policies across the policy spectrum, valuing human wellbeing above crude economic growth.
With the UK's business air travel falling, the Airport Commission says we need a new London runway to make us happy! But all their data really shows is that people who go on holiday lead happier lives than those who don't, writes Chris Goodall, and that people enjoy holidays: a flimsy basis on which to expand airport capacity, and blow the UK's emissions targets out of the water.