The phrase 'national treasure' are thrown around more than a volleyball at the olympics, but when it comes to David Attenborough, there truly isn't a better way to describe him. He is the nation's granddad. We'd adopt him if we could.

As Planet Earth returns to our screens for a second series, we look back at 18 times he was probably the best man to walk the world. Ever.

1. When he loved a good leaf

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2. When he let a gorilla bite his knee cap

3. When this happened and you couldn't help but be happy

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4. When he met a blind baby rhino and it was incredible

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5. When you realise he was quite fit in 1963

(Are we allowed to say that?)

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6. When he accidentally swore and everyone loved it

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7. When he narrated Adele's 'Hello' and it was amazing

8. When you watch him through the decades

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9. When he found meerkats hilarious

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10. When he was in his boxers

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11. When this magical moment happened

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12. When he was unfathomably fearless

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13. WHEN HE WAS ACTUALLY REALLY FIT.

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14. When he said 'Boo' to a sloth and it was wonderful

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15. When a snake spat venom at him and DO YOU HAVE NO RESPECT?

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16. When he had patience like no other

17. When he took his life into his own hands for our entertainment

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18. When you really, really wanted him to be your granddad

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Now how exactly do we go about making him immortal?

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