Homo erectus: Ancient humans survived longer than we thought

Homo erectus evolved around two million years ago, and was the first known human species to walk fully upright. New dating evidence shows that it survived until just over 100,000 years ago on Java — long after it had vanished elsewhere.

COP25 was meant to tackle the climate crisis. It fell short

The message from climate activists was passionate, the warning from the scientific community and countries already experiencing the effects of climate change, urgent. The action from world powers has been excruciatingly slow and inadequate.

Oceans losing oxygen at unprecedented rate, experts warn

Oxygen in the oceans is being lost at an unprecedented rate as a result of the climate emergency and intensive farming. Sharks, tuna, marlin, and other large fish species are at particular risk, with many vital ecosystems in danger of collapse.

UN launches Madrid climate conference

UN Secretary-General Antonio Guterres has described as “utterly inadequate” efforts to stop climate change. He noted that the world has the scientific knowledge and technical means to limit global warming but political will is lacking.

Saving the Whanganui

Granted personhood by New Zealand’s parliament, the Whanganui is the first river to be recognised as an indivisible, living being. But what happens when the river encounters development, farming, forestry, and run-off that challenge its health and ecology?

Climate tipping points — too risky to bet against

Evidence is mounting that tipping points in the Earth system — such as the loss of the Amazon rainforest or the West Antarctic ice sheet — could be more likely than was thought, potentially committing the world to widespread, long-term irreversible changes.

History as a giant data set

Calculating the patterns and cycles of the past could lead us to a better understanding of history. Could it also help us prevent a looming crisis?

Climategate 10 years on: what lessons have we learned?

Climategate marks its 10th anniversary this month – an opportune moment to reflect on just how serious was its impact on efforts to stop Earth from being ravaged by rising seas, spreading deserts, disappearing coral reefs, and suffocating heat.