Earth: Priceless
Christmas is the season when prices, costs and value are on everybody’s mind. At least when trying to estimate how much a present is worth to a friend or family member (and the value of our own happiness at their happiness): is it really worth the price in the store? Lee Billings recounts a fascinating discussion with the astronomer Greg Laughlin and natural capital expert Taylor Ricketts about How Much Money Would an Earth-Like Exoplanet Really Be Worth to Us? A closely related question is of course: what is Earth worth?