negative emissions

Comment: Yes, Scientists Say we Need to Plant Trees and Eat Less Meat ⁠— But Not as a Replacement for Cutting Fossil Fuels

Read time: 6 mins
Timber in New Zealand

After a three year wait, the UN’s official scientific advisory panel’s verdict on land and climate is here. The report is about as glum as you might have come to expect from a body tasked with documenting humanity’s ongoing descent into climate-induced havoc.

The UN is right to highlight the crucial importance of land in both causing and curbing climate change — it has been neglected for far too long. In particular, the report’s conclusions on just how much our current food system threatens the climate, as well as how much climate impacts threaten our food supply, need a huge and sustained conversation.

New Scenarios Show How the World Could Limit Warming to 1.5C in 2100

Read time: 11 mins
Climate activists at COP21 in Paris

By Zeke Hausfather, Carbon Brief. Originally posted on Carbon BriefCC BY-NC-ND 4.0

In the 2015 Paris Agreement on climate change, nearly every country on Earth pledged to keeping global temperatures “well below” 2C above pre-industrial levels and to “pursue efforts to limit the temperature increase even further to 1.5C”.

However, at the time, scientists had only modeled energy system and carbon mitigation pathways to achieve the 2C target. Few studies had examined how the world might limit warming to 1.5C.

Now a paper in Nature Climate Change presents the results from a new modelling exercise using six different “integrated assessment models” (IAMs) to limit global temperatures in 2100 to below 1.5C.

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