Climate change has increased the destructive force of natural disasters, knocking down power lines and leaving thousands in the dark. You don’t realize how much of your life depends upon a steady electricity stream until authorities say it may be weeks until service returns.

Here’s how natural disasters impact our energy security, what we can do about it and what hurdles we must first overcome.    ...

The world has a worsening water crisis and half of all food production will be at risk of failure by the middle of this century.

That’s the worrying message from a report released Wednesday by a major international study.