From the article:
The world is overdue a ferocious 'space storm' that could knock out communications satellites, ground aircraft and trigger blackouts - causing hundreds of billions of pounds of damage, scientists say.
Astronomers today warned that mankind is now more vulnerable to a major solar storm than at any time in history - and that the planet should prepare for a global Katrina-style disaster.
A massive eruption of the sun would save waves of radiation and charged particles to Earth, damaging the satellite systems used for synchronising computers, airline navigation and phone networks.
We're overdue for a lot of things...
A supermassive volcano in Yellowstone, an ice age, a plague/pandemic, an asteroid strike, new Pauly Shore movie... all scary things.
Update, add collapsing aging U.S. dams to the list -> http://www.dailymail.co.uk/news/article-1359485/4-400-U-S-dams-susceptible-failure-sparking-fears-future-catastrophic-flood.html - http://www.youtube.com/watch?v=-6oxhLz9l5s <- I guess you should stock up on some "Damn bait" beforehand