Climate activists from the Philippines, the UK and Argentina take questions on climate change.

In Kumik, in India’s northern Ladakh region, there is a serious water crisis, with some residents forced to abandon their homes and move elsewhere.

One rail tunnel, built almost 150 years ago, has flooded seven times in the past year.

The astronauts spent 200 days in orbit on the International Space Station.

Engineer Rod Read has spent the past decade building homemade spinning kite turbines that can generate clean electricity.

By mimicking the way lobsters’ eyes work, scientists have designed new X-ray space telescopes that can survey much larger areas.

A peat bog in County Tyrone is providing a “nature-based solution” to climate change.

Ros Atkins looks at why vast tree-planting initiatives are concerning some experts.

How hydrogen could help Scotland make the most of its wind energy potential.

Households contribute the most food waste – so what if you could track spoilage in real time?

Since the COP26 climate change summit started, hundreds of protesters have taken to the city’s streets.

The BBC’s Roger Harrabin takes a look at the tech behind hydrogen energy and its green potential.

Almost every day for 40 years, expert diver Jim Abernethy has been swimming with sharks in the Bahamas.

If emissions continue rising, Europe can expect 50C heatwaves every three years, the Met Office says.

Jacinda Ardern defends New Zealand’s climate policies, and its role as a Pacific nation.

This inflatable playground on display at COP26 removes carbon and particulate matter from the air.

David is worried about his asthmatic daughter Esme because of the pollution levels she’s exposed to.

The BBC’s Science Editor David Shukman takes a look inside the UN’s climate conference in Glasgow.

Prime Minister Boris Johnson has said he is not in favour of a proposed coal mine in Cumbria.

UK Prime Minister Boris Johnson warns of the dire consequences of failure at the COP26 climate summit.

COP26 President Alok Sharma says he is going ”to try and build consensus” among countries on reaching 1.5C maximum global warming.