Beekeepers lost more of their managed colonies in the past year since 2010 as rising temperatures continue to cause havoc

Sweat covers Isaac Barnes’s face under his beekeeper’s veil as he hauls boxes of honeycomb from his hives to his truck. It is a workout in what feels like a sauna as the late-morning June temperature rises.

Barnes was hot, but his bees were even hotter. Their body temperature can be up to 15 degrees Celsius higher than the air around them.

As global temperatures rise under climate change, scientists are trying to better understand the effects on managed and wild bees as they pollinate crops, gather nectar, make honey and reproduce.

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