Saving the Planet? Around 2 billion sites on the web On 10 million physical machines PHP drives at least 50% Currently ~5% PHP 7 Adoption which is about 250k physical servers 3000 KWH/year per server costs approx. US$400 Data center cooling doubles that 0.5kg CO2 per KWH At 5% Adoption US $200M savings 750M KWH Savings 375M kg less CO2 At 100% Adoption $4B savings 15B KWH Savings 7.5B kg less CO2 Do your part Upgrade to PHP 7!