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Lead was added to petrol to make combustion efficient but modern engines no longer need it

Floods wiped out all food crops for 1995 as well as seeds to plant for the following year

How governments are resisting advice from the IPCC to take action against climate change

The role of population expansion, shark and sea cucumber fishing and 80,000 goats

The building of the Malaysian dam was put on hold to take account of the views of locals

The global plan of action to secure plants' genetic resources for future generations

How oil exploration in the Peruvian Amazon will threaten 19 different indigenous peoples

Unchecked water extraction has led to 250,000 people being affected by arsenic poisoning

Anne Dingwall talks about the toxic waste and fake recycling that ends up in Hong Kong

Reforestation by dropping trees from airplanes in icecream cone-shaped delivery packages

Can one of the planet's last great wildernesses be kept clean for future generations?

How are people conserving water in the country's capital Windhoek?

Eight giant tortoises have died of a mystery disease on Santa Cruz Island in the Galapagos

The shape of tree rings indicates a relative warming of the world over the last 100 years

Can you prepare for disaster?

The melting of the glaciers in mountain ranges in equatorial areas such as the Andes

"The environmental problems are also social problems"

The device that sucks pollution out of the air described by inventor Melvin Prueitt

Birds' habitats, refuelling stops on migration routes and breeding grounds are threatened

Yahya Jammeh's policy to send young people from cities to the countryside to work on farms

Why developed and former Communist nations are not reducing greenhouse emissions

Is the Indian government doing enough to protect tigers?

What impact does the mass migration of people fleeing conflict have on the environment?

The slow progress of the Niger Delta's recovery from oil damage

What state is the ozone layer in around the world in 1996?

Deforestation, international funding and the legacy of the Khmer Rouge regime in Cambodia

Pollution and waste from the El Porco mine contaminated rivers when a dam disintegrated

How the ruling families of the Gulf Emirates are funding the preservation of falcons

The Sakha Republic in Siberia pledged to protect 70 million hectares of forest

How dioxins, pesticides and PCBs upset the balance of hormones in human foetuses