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Photographer Francesco Bosso travelled to Greenland to capture images of the melting icebergs, which he describes as ‘gems of nature in danger of extinction’. The results are presented in his new book, Last Diamonds

Even with aggressive climate policies to limit global warming, food security in some areas will be threatened

We have delayed action for so long on handling climate change, we now can no longer can “will it happen?” Rather we have to ask “how bad will it be?” and “what can be done about it?” As our society thinks about what we should do to reduce our carbon pollution and the consequences of electing science-denying politicians, scientists are actively studying the pros and cons of various emission reductions.

Readers of this column have certainly heard about temperature targets such as 1.5°C or 2°C. These targets refer to allowable temperature increases over pre-industrial temperatures. If humans take action to hit a 1.5°C target, it means we are committed to keeping the human-caused global temperature rise to 1.5°C. Similarly for a 2°C target.

Food insecurity is affected by many factors, not just climate. Poverty, access to irrigation and transport networks are all crucial. But increased flooding or drought can impact food production and distribution, making food systems less secure.

There are win-win solutions to this problem.

Democracy is not a zero-sum game. Behaving as if it is degrades democratic process and our personal political sovereignty.

A zero-sum game is a contest for control of finite resources. Whatever one gains, another must lose. When two or more candidates compete for a single public office, only one can win, so many people view politics as bloodsport, applying “winner takes all” thinking to everything political. But elected officials are not conquerors; they are sworn servants to all their constituents.

• In 2017, the United States spent as much in disaster relief — for floods, wildfires, drought, and storms — as the total comparable spending from 1980 to 2010.

• We now have scalable clean power-generating technologies, cost-effective industrial-scale and in-home battery storage, and rapidly expanding clean finance.

• We are now witnessing the rise of high-efficiency climate-smart finance to drive new investment and innovation in many sectors.

• The mainstreaming of green bonds and application of smart carbon pricing policies will make the whole economy more efficient at building value for people, institutions, and enterprise.

Health, climate change, animal welfare... what’s driving more people and brands to embrace a plant-based lifestyle? We investigate, and, below, four vegans explain their choice

Late on a Thursday afternoon in early March, just off Brick Lane in the heart of London’s nightlife hotspot Shoreditch, 23-year-old Louisa Davidson is taking calls and co-ordinating cables and scaffolds, as shocking pink Vegan Nights banners are hung around the expansive courtyards of the Truman Brewery. There is a chill in the air, quickly warmed by a buzzing atmosphere more like a music festival than an ethical food fair, as BBC Radio 1Xtra and House of Camden DJs play records, cocktails are poured and entrepreneurs sell zines and street wear alongside the vegan sushi, patisserie and “filthy vegan junk food”.

Davidson had been running weekend markets at the venue when she noticed a sharp increase in the number of vegan food businesses and vegan menus on offer. So last September, with her colleagues, she decided to put on a one-off vegan night market, with music, drinks and food. “On the day there were queues around the corner,” she says. “We were not prepared for it at all! There was so much interest that by Christmas we decided to make it a monthly thing. It’s all happened very quickly.” Inspired by its success, and the traders she was working with, Davidson switched from vegetarian to a vegan diet in January.

350%

Whereas before, veganism may have been viewed like you were giving up something, now it’s been reframed as what you gain

One can become vegan in stages – there are no rules and you are only answerable to your own conscience

Related: Animal agriculture is choking the ​Earth and making us sick. We must act now | James Cameron and Suzy Amis Cameron