Alistair Walsh

Image: Lewis Sanders

Alistair Walsh

Skip next section Featured stories by Alistair Walsh

Featured stories by Alistair Walsh

Waterfall at tropical Rainforest of Ranomafana National Parks in Madagascar

Waterfall at tropical Rainforest of Ranomafana National Parks in Madagascar

Dramatic forest loss due to farming, climate change: report

Every day the planet loses more and more trees to deforestation. But why are forests so important for us anyway?

Smoke rises from a city in the early morning

Smoke rises from a city in the early morning

What is the Anthropocene?

Many scientists say profound human-driven change to our planet has ushered a new geological epoch. Others are less sure.

A young woman carries a water jug on her back through a dry landscape

A young woman carries a water jug on her back through a dry landscape

How sustainable farming could help Ethiopian farmers

Drought, planetary heating, war: The reasons for Ethiopia's food crisis are complex. Can smart farming techniques help?

Skip next section Stories by Alistair Walsh

Stories by Alistair Walsh

Wildebeest crossing a river

Wildebeest crossing a river

What are migratory species and why are they threatened?

What are migratory species and why are they threatened?

Why do animals migrate and how can we protect them?

A man on a horse, the sky is darkened by smoke from wildfires and firemen stand in the background

A man on a horse, the sky is darkened by smoke from wildfires and firemen stand in the background

Did humanity just break the Paris climate agreement?

Did humanity just break the Paris climate agreement?

For a whole year, the planet exceeded 1.5 degrees Celsius warming limit. Are we on the path to "climate chaos?"

A close up of a red and blue dart poison frog

A close up of a red and blue dart poison frog

Brazil proposes global forest fund at Dubai climate talks

Brazil proposes global forest fund at Dubai climate talks

People in scores of rainforest nations could be paid to preserve forest areas under Brazil's new concept.

A man walks with a camel carrying his goods in an area 30 kilometers from the city of Gode, Ethiopia

A man walks with a camel carrying his goods in an area 30 kilometers from the city of Gode, Ethiopia

Greenhouse gases continue to rise as warming hits record

Greenhouse gases continue to rise as warming hits record

As countries meet in Dubai for climate talks to negotiate emissions reductions, the world is warming faster than ever.

In this Feb. 26, 1997 file photo, Khaled al-Otaiby, an official of the Saudi oil company Aramco, watches progress at a rig at the al-Howta oil field near Howta, Saudi Arabia.

In this Feb. 26, 1997 file photo, Khaled al-Otaiby, an official of the Saudi oil company Aramco, watches progress at a rig at the al-Howta oil field near Howta, Saudi Arabia.

How the Gulf region is planning for a life after oil

How the Gulf region is planning for a life after oil

The Gulf countries are marching ahead with an ambitious domestic transition to renewable energy.

A sculpture made of plastic waste. Plastic rubbish flows out of a giant tap suspended in the air.

A sculpture made of plastic waste. Plastic rubbish flows out of a giant tap suspended in the air.

Waves of waste: The harsh truth about ocean plastic

Waves of waste: The harsh truth about ocean plastic

Some of the world's most motivated janitors are trying to clean up vast fields of plastic waste. But is it worth it?

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