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Alistair Walsh
Skip next section Featured stories by Alistair Walsh
Featured stories by Alistair Walsh
Earth has already exceeded 2024 annual ecological limits
To continue living the way we do, humanity would need the resources of more than 1 1/2 planets.
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?
What is the Anthropocene?
Many scientists say profound human-driven change to our planet has ushered a new geological epoch. Others are less sure.
Skip next section Stories by Alistair Walsh
Stories by Alistair Walsh
Is climate change behind all extreme weather events?
Is climate change behind all extreme weather events?
From extreme heat to cyclones and flooding, what is causing extreme weather across the world?
Can artificial glaciers help with water shortages?
Can artificial glaciers help with water shortages?
As rising temperatures cause glaciers around the world to recede, some countries have started making their own.
How sustainable farming could help Ethiopian farmers
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?
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?
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?"
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.
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