TED: My mind-shifting Everest swim | Lewis Pugh

The speaker recounts a swim across the North Pole, highlighting the extreme conditions and personal challenges faced. He then discusses the impact of climate change on the Himalayas and attempts a symbolic swim on Mount Everest, facing altitude challenges. After a near-drowning experience, he learns the importance of adapting strategies and emphasizes the need for a radical tactical shift in addressing climate change, urging individuals to commit to sustainable actions.

What is the significance of the melting glaciers in the Himalayas as mentioned in the text?

Reflect on the statement: 'Just because something has worked in the past so well doesn't mean it's going to work in the future.' What does this imply in the context of climate change?

What does the speaker mean by 'radical tactical shift' in relation to environmental issues?