David Attenborough is pleading with people to keep a spoonful of sugar in their garden this summer to help wildlife.
People should be trying to leave a heaped spoon of sugar in the garden, especially in the hot weather.
Many of us try to keep sugar away from the garden, as it attracts ants and wasps, but for bees the substance is vital.
Bees are vital for our ecosystem, with almost a third of the food we eat being pollinated by the insects.
Bees are in danger because of a combination of pesticides, urbanisation and climate change, which are causing their numbers to drop drastically.
Sir David has previously said: "If bees were to disappear from the face of the earth, humans would have just 4 years left to live."
And this is where a spoonful of sugar comes in – reports Mirror Online.
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Speaking to Country Living, Sir David said : "This time of year bees can often look like they are dying or dead, however, they’re far from it.
"Bees can become tired and they simply don’t have enough energy to return to the hive, which can often result in being swept away.
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"If you find a tired bee in your home, a simple solution of sugar and water will help revive an exhausted bee.
"Simply mix two tablespoons of white, granulated sugar with one tablespoon of water, and place on a spoon for the bee to reach."
The mix of water and sugar will rehydrate the tired bee and give them some much-needed energy.