杏吧原创

I was reading about the quest for absolute zero temperature in New 杏吧原创 (18 March, p 10). Is there an equivalent maximum temperature? If so, what is it? And how could one reach it?

I routinely add coffee grounds and teabags to the compost that I put in my wormery. What effect, if any, would residual caffeine have on earthworms and other invertebrates?