Despite huge investments in clean - energy technologies, such as wind and solar power, “the average unit of energy produced today is basically as dirty as it was 20 years ago, ” says Maria van der Hoeven, executive director of the International Energy Agency.
તેમ છતાં, “એક યુનિટ વિદ્યુત ઉત્પન્ન કરવાથી આજે એટલું જ પ્રદુષણ થાય છે, જેટલું ૨૦ વર્ષ પહેલાં થતું હતું. ”