Another two harmless asteroids being shared in the sensationalist press. I am getting PM's from some really scared people about these. These two asteroids not only are harmless, they never were even considered for the Sentry table. And no they are not planet killers. They are not big enough to do more than have minor global effects like a few months of cooler weather because of dust in the atmosphere. Large enough to have some effects on the yields of our crops for one year. But that is an academic question becaue they can't hit.

To debunk:

This is an interesting paper but it’s been misreported widely. Over the last decade the world has continued to get greener almost everywhere, because of the CO2 fertilization effect, lengthening growing seasons in northern latitudes and human initiatives to improve agricultural yields, restore degraded land, reverse desertification and plant trees. That's especially so in India, greening by over 6% per decade mainly through intensive agriculture, and in China, greening by over 10% per decade, because of its work on reafforestation, restoring degraded land and more intensive agriculture.