For Wednesday science-technology day I return to the  latest issue of  Energy Matters , compiled by the American Energy Society. India is not buying crude oil from Russia.  Politics?  No, cost. When the Ukraine War started, the West reduced imports from Russia, so  India became the second largest purchaser, next to China .  Then this sudden drop. One reason is that freight costs have risen, plus petroleum is now cheaper from places like the UAE. 91% of the global economy has pledged to cut emissions to zero.  However, a  lot of promises, but no action . That net zero pledge is supposedly for 2050.  Air travel will cripple that attempt. To begin, the U.N. climate science panel has said that man-made carbon dioxide emissions need to fall by about 45% by 2030 to limit warming to only 1.5 C ( 2.7 F ). Some say planting more trees can help.   I say planting more trees will hurt .  Most analysts don't consider methane in their calcul...