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CNN special correspondent, Philippe Cousteau discusses solutions for environmental conservation with an expert panel.

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Moldy matters: How wasted food is destroying the environmentupdated Wed Jun 27 2012 06:10:19

At first glance, Austrian artist Klaus Pichler's spell-binding photographs could be mistaken for a set of stylish advertisements. It takes a moment to digest -- excuse the pun -- that you're staring at pictures of rotting food.

'World's greenest buildings' get seal of approvalupdated Thu Jun 21 2012 06:27:56

A rigorous green certification system is recognizing the next phase of eco design, which its founders describe as "the world's greenest buildings."

Join the conversation on sustainabilityupdated Wed Jun 20 2012 07:39:41

Monita Rajpal explains how viewers can join the conversation around the Rio +20 Earth Summit by using CNN Ecosphere.

Background: 2009 Australian bushfiresupdated Fri Jun 15 2012 11:35:55

From 2009: With a long history of covering bushfires, John Vause offers some insight into Australia's latest wildfires.

2010: Deadly floods, mudslides in Brazilupdated Fri Jun 15 2012 11:32:48

Video from April, 2010. The worst floods in decades leave dozens dead in and around Rio de Janeiro.

2003: Paris unprepared for extreme heatupdated Fri Jun 15 2012 06:52:04

In August 2003, hospitals were overwhelmed by heatstroke patients as temperatures hovered above 107 degrees Fahrenheit.

How to use CNN's Ecosphereupdated Fri Jun 15 2012 06:39:32

Join the global discussion on sustainability with hashtag #RIO20. CNN explains how to use Ecosphere.

Melbourne's mayor says city is copingupdated Fri Jun 15 2012 06:13:50

The Lord Mayor of Melbourne, Robert Doyle, explains how the Australian city has responded to extreme weather events.

Tokyo: 'We are adapting'updated Fri Jun 15 2012 06:13:17

Yuko Nishida, from Tokyo's Bureau of the Environment, explains how the city is adapting to climate change.

CNN ECOSPHERE project explainedupdated Fri Jun 15 2012 05:54:57

Errol Barnett explains how to join CNN's Twitter conversation with the ECOSPHERE visualization during #COP17.

CNN ECOSPHERE: Digital garden visualizes live discussion at Rio+20 updated Fri Jun 15 2012 05:15:15

For three days from June 20, heads of states, business leaders and civil society representatives will gather in Brazil to tackle the world's environmental problems at Rio+20, the United Nations Conference on Sustainable Development.

On the front line of climate change: Five cities battling floods, heat and stormsupdated Thu Jun 14 2012 06:55:42

On the front line of climate change: Five cities battling floods, heat and stormsupdated Thu Jun 14 2012 06:55:33

On the front line of climate change: Five cities battling floods, heat and stormsupdated Thu Jun 14 2012 06:55:25

On the front line of climate change: Five cities battling floods, heat and stormsupdated Thu Jun 14 2012 06:55:14

On the front line of climate change: Five cities battling floods, heat and stormsupdated Thu Jun 14 2012 06:55:06

On the front line of climate change: Five cities battling floods, heat and stormsupdated Thu Jun 14 2012 06:54:54

Solar-powered 'supertrees' breathe life into Singapore's urban oasisupdated Fri Jun 08 2012 07:08:03

Singapore's latest development will finally blossom later this month, with an imposing canopy of artificial trees up to 50 meters high towering over a vast urban oasis.

'Vertical farm' blossoms at meatpacking plantupdated Tue May 29 2012 05:28:37

An old meatpacking plant on Chicago's South Side is being transformed into an eco farm, which its founders says will produce food sustainably, while creating zero waste.

This month on Road to Rioupdated Tue May 22 2012 07:46:25

This month's Road to Rio takes us to Mexico. From solar trees to a hotel made from concrete tubes, Philippe Cousteau, Gabriela Frias and Rafael Romo will search for the country's most innovative carbon reducing ideas.

Mexico City embraces 'pedal power'updated Wed May 16 2012 09:00:31

This month, Road to Rio looks at Mexico's biking initiatives as part of its fight against pollution.

From dump to pump in Mexico Cityupdated Wed May 16 2012 08:29:53

This month on Road to Rio, we looks at the initiatives in place to turn Mexico City's landfill to fuel.

Clamping down on Mexico's pollutersupdated Wed May 16 2012 08:29:08

Road to Rio looks at Mexico City's new initiatives on reducing carbon emissions and prosecuting the worst offenders.

Smog-eating tiles gobble up air pollutionupdated Fri May 04 2012 08:52:27

Can the roof of your house help you breathe easier by reducing the amount of harmful pollutants from urban air?

Trash city: Inside America's largest landfill siteupdated Thu Apr 26 2012 07:54:53

It's as tall as some of L.A.'s highest skyscrapers, but the only residents here are rats and cockroaches.

Turning trash to treasureupdated Thu Apr 19 2012 12:32:06

Visit one of the largest landfills in U.S. and find out how artists in San Francisco are turning trash into treasure.

This month on Road to Rioupdated Thu Apr 19 2012 07:27:49

This month, the Road to Rio is making a stop in the U.S. state of California to discover what cities are doing there to cut carbon emissions. CNN's Isha Sesay, Thelma Gutierrez and special correspondent Philippe Cousteau seek out the best green innovations in Los Angeles, including variety of new car technologies, a bicycle kitchen and smog eating tile. From there, Philippe Cousteau heads to northern California to check out how artists are giving garbage a whole new form and sense of respect. Then he heads to a community that is producing as much energy as it's using in Davis, California. Finally, his assignment really gets tough as he heads to Napa Valley to see how wineries are getting a green makeover. Meanwhile, Thelma Gutierrez visits one of the largest landfills in the country to see first hand exactly where our garbage is going. And Isha Sesay gets a behind-the-scenes tour of Warner Brothers studios to witness the newest green innovations they're implementing. Watch the show at the following times:

California's carbon friendly wineupdated Wed Apr 18 2012 13:07:19

CNN special correspondent Philippe Cousteau travels to Napa Valley, California to taste some eco-friendly wine.

Going green on the big screenupdated Wed Apr 18 2012 13:03:31

Road to Rio tours the Warner Bros studios to find out how the film production is going green.

Carbon free universityupdated Wed Apr 18 2012 13:02:03

The University of California Davis welcomes students to its zero net energy community.

LA's green city challengeupdated Wed Apr 18 2012 12:55:59

CNN's Road to Rio stops in LA, California to find out more about the city's green projects.

Beirutopia: Could Lebanon's capital become a garden city? updated Mon Apr 09 2012 07:40:24

The legendary Hanging Gardens of Babylon are the inspiration behind an ambitious plan to grow a rooftop forest high above Beirut's crowded streets.

Futuristic farm shop grows food in synthetic veg patchupdated Fri Mar 30 2012 12:16:28

Behind a Victorian shop front in the Cockney heartland of London's East End hides an urban agriculture initiative that claims to be the world's first farm in a shop.

Farm shop grows fresh food in storeupdated Thu Mar 29 2012 07:04:31

An urban farming project in London produces fresh food, including fish, eggs and vegetables, all under one roof.

Sewing the seeds of a low carbon futureupdated Mon Mar 26 2012 11:38:29

Arcadia Group has developed a groundbreaking rice seed which incorporates the nitrogen absorbing genes from wheat.

Hong Kong's Green City Challengeupdated Wed Mar 21 2012 13:28:43

CNN's Road to Rio looks at the most exciting green projects underway in Hong Kong.

China's carbon positive cityupdated Wed Mar 21 2012 13:24:32

Branded the world's first carbon positive city, Baoding describes itself as a 'living showcase of environmental technology'

A greener playtime for Chinese toysupdated Wed Mar 21 2012 13:14:24

Kristie Lu Stout goes to a toy factory in Shenzhen, China where an ambitious plan to cut the carbon emissions is underway

Micro algae eats carbon emissionsupdated Wed Mar 21 2012 13:13:51

Chinese scientist have developed a micro algae that is more effective than trees at absorbing carbon.

The eco artists turning trash into treasureupdated Fri Mar 16 2012 08:13:44

"The Waving Wall" is a street art installation that highlights the issue of embedded water -- the hidden quantities of water used to produce the products we buy.

This month on Road to Rioupdated Wed Mar 14 2012 08:35:23

This month, Road to Rio touches down in China. In their first stop, CNN's Kristie Lu Stout and Stan Grant, and the Road to Rio 'Expert' Jie Yu, meet in Hong Kong to explore a range of the city's boldest carbon cutting initiatives.

Ancient 'air-conditioning' cools building sustainablyupdated Tue Feb 28 2012 07:16:45

How did buildings keep cool before the invention of air conditioning? As architects consider how to reduce the energy demands of new builds, some are turning to the past for simple, low-tech solutions.

Mumbai's recycling slumupdated Wed Feb 15 2012 13:58:16

In the heart of Mumbai's largest slum, rag pickers are turning recycling waste into big business.

Picking a greener teaupdated Wed Feb 15 2012 13:43:21

Nick Glass visits the Chamong Tea Estate in Darjeeling where tea pickers are exploiting renewable hydroelectric power.

Delhi's green city challengeupdated Wed Feb 15 2012 13:42:03

The Road to Rio team travel to Delhi, India to look at the city's best green initiatives.

Solar energy for India's colorful silksupdated Wed Feb 15 2012 13:35:29

A textile factory in Jaipur, India is using solar energy to address the carbon intensive process of dying colorful silks

A greener conversationupdated Wed Feb 15 2012 13:34:55

How can solar power help generate a cleaner conversation for India's thriving telecoms industry?

Green lessons from Mughal architectureupdated Wed Feb 15 2012 13:34:27

Award winning architect Manit Rastogi looks back to his Mughal heritage to create green buildings of the future.

Hacking the city for a greener futureupdated Fri Feb 10 2012 10:44:05

City dwellers will soon be able to make greener travel choices just by looking at their smartphone.

Is a 'nudge' in the right direction all we need to be greener?updated Wed Feb 08 2012 07:05:30

What's the best way of encouraging men to pee more accurately in public urinals? Answer: Give them a target.

Abu Dhabi's 'Green Police'updated Tue Feb 07 2012 13:11:03

Carbon cutting measures are in place all over the UAE, in Abu Dhabi even the police are doing their bit.

Reducing carbon emissions in the UAEupdated Tue Feb 07 2012 12:43:42

CNN's Road to Rio travels across the UAE to find out how cities are attempting to reduce their carbon emissions.

This month on Road to Rio updated Thu Feb 02 2012 12:50:05

This month Road to Rio -- a Green City Journey stops off in the world's second most populated country, India. Sara Sidner, Mallika Kapur and Nick Glass meet in the capital city New Delhi, to explore how carbon cuts are being made.

Rio+20 'Earth Summit'updated Wed Feb 01 2012 05:49:05

Nick Glass explores the Kyoto Protocol from its source at the 1992 'Earth Summit' in Rio.

'Green Sheikh' looks to the futureupdated Wed Feb 01 2012 05:48:32

Sheikh Abdul Aziz bin Ali Al Nuaimi, the "Green Sheikh" says moderation can reduce our carbon footprint.

Nuclear energy in the UAEupdated Wed Feb 01 2012 05:47:47

The oil rich United Arab Emirates is looking for clean, renewable energy. CNN's Leone Lakhani investigates.

The carbon footprint of waterupdated Wed Feb 01 2012 05:17:52

CNN's Nick Glass looks at the environmental effect of desalinating water in the UAE and green alternatives.

Floods, heat, migration: How extreme weather will transform citiesupdated Fri Dec 23 2011 08:01:15

When Tropical Storm Washi ripped through the southern Philippine city of Cagayan de Oro last weekend, it dumped in one day more than the city's entire average rainfall for the month of December.