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When the expanding desert caused Somalia and Sudan’s vibrant cattle industry to dry up, it helped spark the War in Darfur and the Somali Civil War; in Cambodia, where 80 percent of the population lives in rural areas, droughts, floods and blistering heat are decimating traditional industries of farming, fishing and livestock raising, so much so that one in four Cambodians had been displaced by 2008, according to the International Office of Migration.

Though it is not in an airline alliance like Oneworld or SkyTeam, Alaska partners with more than a dozen different carriers including American Airlines, British Airways, Cathay Pacific, Emirates, Korean Air, Qantas and Singapore Airlines. By flying a combination of Alaska and many of those carriers over the past few years, I have managed to rack up hundreds of thousands of Alaska miles. As an added bonus, I was awarded 50,000 Alaska miles for hitting MVP Gold 75K status last year with the airline, so that alone was nearly enough miles for this one trip.

"That is important because it has been linked to falling asleep quicker," Todd said. "But you want to stay cool, and some of the ways that provide an instant cool don’t last throughout the night. We’ve been doing a lot of work on that."

When buying a memory foam mattress there are a few things to consider. Do you want a full memory foam mattress, or a hybrid, which might have some memory foam and some layers made from other materials? What size are you looking for — larger mattresses are almost always more expensive, as you might expect.

One recent (and ongoing) high-profile example is the Central American migrant caravan that U.S. President Donald Trump sought to make a defining issue during the 2018 midterm elections.

To secure enough personnel, a high-ranking ministry official said it is “urgently necessary” to appoint more women to a wider range of jobs, including high-ranking posts, with the ministry considering measures such as raising the upper limit on the job seeker’s age and the retirement age.

Partially sprung mattresses have a little more "bounce" or resilience than a foam-only mattress, and a different feel.

These are just some of the things you need to consider, but fear not because our buying guide tells you all you need to know before making your purchase. Below this, we’ve picked out the very best children’s mattresses on the market for you to choose from. You can get cheaper kids’ mattresses than these, but they’re often poorly constructed and no more than 100mm deep, so our advice is to stay clear of them.

Why it’s great for side-sleepers: The Nolah AirFoam is nice and soft, ensuring that your hips and shoulders can sink a little into the mattress, keeping your spine nice and straight. The layer directly that, on the other hand, is nice and supportive — so you’ll sink a little into the mattress without sinking in too far. This may not be specific to side-sleepers, but the AirFoam is also aimed at staying cool — so you won’t get too hot during the night.

Warranty: Nectar offers users a 10-year non-prorated warranty, but after 10 years it’ll still repair or replace your mattress is there’s a manufacturer defect found.

Goop might have been wrong about those jade vagina eggs, but accredited, science-based organizations actually side with Paltrow on this one. The American Psychological Association cites sleep as “essential” to well-being, and found that 60 percent of adults have sleep problems a few nights a week. The National Sleep Foundation believes that 45 percent of Americans suffer from poor sleep as a result of their daily activities.

It’s important to keep your mattress clean, so try not to eat in bed, as spills could stain. A regular vacuum will help to keep it dust- and mite-free, an additional benefit for allergy sufferers. Adding a mattress protector (see above) is also a good preventative measure to maintain freshness.