夜间当温度变化消失或是与白天截然相反时，巢内空气循环减弱，有效避免热流失，使得巢穴室温保持稳定。

This circulation gets moreor less switched off at night when the temperature gradients disappear or reverse, avoiding heat loss and keeping the nest at a roughly constant temperature.

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原因：空气中悬浮的室温生细菌会落在你的食物上，“并且一个细菌能在几小时内增殖为百万个，”Draeger说。

Here's why: the ambient bacteria floating around in the air can land on your food, "and can go from one to one million in a matter of hours," Draeger says.

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在室温下，这种黏菌以极慢的速度移动，大概1厘米每小时，但是你可以给它一鼓温暖潮湿的空气来加快它的速度。

At room temperature, the slime mould moves at a slothful rate of about a centimetre per hour, but you can speed this movement up by giving the mould a blast of warm, moist air.

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