The Paris agreement is aimed at limiting global temperature rise to no more than 2°C, but we could reach 1.5°C within the next decade. Here’s the difference that half degree could make to our world — and to our lives.

Our planet is getting hotter and drier. Drinking water is in short supply, but there are two largely untapped sources: the ocean and sewage. To get a taste of what might be in store for our faucets and understand the pros and cons, journalist Amanda Little goes to California.

Using glacier water and pipes (with a big boost from gravity), Indian engineer Sonam Wangchuk has devised a way to store water in the dry high desert.

How can you protect crops against global warming? One answer: find the secrets of plants that already thrive in the most punishing climates, says microbiologist Rusty Rodriguez.

How can humans survive if the world gets drier? Here’s one scientist’s answer … so-called “resurrection” crops.

How the artist Mundano uses his work to call attention to the urgency of vanishing water supplies in California.

The entire state of California is now suffering from severe drought. Read a veteran firefighter’s experience of what this means on the ground — and other stories you need to know about today.