Is it true that … houseplants freshen the air in our homes and offices?

If you want to seriously oxygenate your rooms with greenery, you’re going to need a lot of space ‘Plants take in carbon dioxide and release oxygen when they photosynthesise,” says John Tregoning, a professor at Imperial College London and author of Live Forever?

A Curious Scientist’s Guide to Wellness, Ageing and Death . “If you’ve got enough of them, they should produce more oxygen than there was initially. ” It’s…