Keeping a baby endangered rhino warm

When winter temperatures dropped to as low as -5°C a heat pump kept the precious calf and her family cosy.  The zoo’s next step is installing solar panels to help power its heat pumps, which will bring it a step closer to having self-sustaining buildings

Baby rhino, Lumi, born to mum Zuri last autumn. Her name means 'bringer of life'. Picture: Chester Zoo

Rhinos, despite their tough exterior, are sensitive creatures.

So, when England’s Chester Zoo replaced the oil boiler at its rhinoceros habitat with six air-source heat pumps last autumn, Emma Evison is the first to admit she was wary.