My understanding is that this has been known for decades, it's not like it's been suppressed.

> He also notes that increased CO2 can help boost agriculture productivity, making it easier to feed the world's population.

In cooler countries, this is indeed the case. However, most of the world's population lives in warmer regions, meaning even if we have plenty of food, it's poorer countries that will lack it, so we'll still get climate refugees.