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Watch a Tree Release a Massive "Pollen Bomb" Into the Air

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In case your itchy, watery eyes hadn't already tipped you off, spring is in the air. Some trees release up to a billion pollen grains apiece each year, and instead of turning into baby trees, many of those spores end up in the noses of allergy sufferers. For a visual of just how much pollen is being released into our backyards, check out the video below spotted by Gothamist.

This footage was captured by Millville, New Jersey resident Jennifer Henderson while her husband was clearing away brush with a backhoe. He noticed one tree was blanketed in pollen, and decided to bump into it to see what would happen. The result was an explosion of plant matter dramatic enough to make you sniffle just by looking at it.

"Pollen bombs" occur when the weather starts to warm up after a prolonged winter, prompting trees and grasses to suddenly release a high concentration of pollen in a short time span. Wind, temperature, and humidity levels all determine the air's pollen count for any given day, but allergy season settles down around May.

After determining that your congestion is the result of allergies and not a head cold, there are a few steps you can take to stave off symptoms before they appear. Keep track of your area's pollen report throughout the week, and treat yourself with antihistamines or nasal spray on days when you know it will be particularly bad outside. You can also keep your home a pollen-free zone by closing all the windows and investing in an air purifier. Check out our full list of seasonal allergy-fighting tips here.

[h/t Gothamist]

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Live Smarter
How to Choose the Best Watermelon
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Buying a watermelon is an experience one can grow to resent. The 92 percent moisture content of Citrullus lanatus means you're basically buying a giant ball of water. On the plus side, they're delicious and packed with enough vitamin C and D to keep you from getting scurvy.

But how to select the best of the batch? Food blogger Emma Christensen over at kitchn recently offered some advice, and it involves a little weight-training. When you examine watermelons in the produce section of your local grocery, you want to look for the heaviest one for its size. The denser the fruit, the more juice it has. That's when it's at its most ripe.

Next, check the underside of the watermelon for the "splotch." That's the yellow patch the watermelon develops by resting on the ground. If it's a creamy yellow, it's also a good indicator of being ripe.

Finally, give the underside a little smack—not aggressive enough to draw attention from grocery workers, but enough so that you can determine whether the watermelon sounds hollow. If it does, that's good. If it sounds dull, like you're hitting a solid brick of material, it's overripe; put the watermelon down and slowly back away from it.

If you're not confident in your watermelon evaluation abilities, there's another option: Local farmers markets typically have only choice product available, so any watermelon you pick up is likely to be a winner. You can also ask the merchant to pick one out for you. Pay attention to what he's doing and then try to emulate it the next time you're forced to choose your own produce.

[h/t: kitchn]

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Health
The CDC Makes It Official: Public Pools Are Disgusting
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Every summer, warm weather sends people across the country looking for a cool refuge in public pools, hotel pools, spas, and other water-based destinations. Before you take the plunge, you may want to heed the advice of the Centers for Disease Control and Prevention (CDC). Jumping into a publicly-populated pool could be like bathing in someone else’s diarrhea, as Men’s Health reports.

The health agency revealed its findings in their Mortality and Morbidity Report, which explains why pools are ground zero for bacteria. Between 2000 and 2014, the CDC traced 493 outbreaks and over 27,000 cases of illness that could be connected to exposure to a public pool. The primary culprit was Cryptosporidium, a parasite found in feces that causes intestinal distress. The determined little bugs can survive for up to seven days after encountering the CDC’s recommended levels of one to three parts per million (PPM) of free chlorine. Even if the pool is being cleaned and maintained properly, Cryptosporidium can idle long enough to infect someone else. The report also indicated that Legionella (which causes Legionnaire’s disease) and Pseudomonas (responsible for ear infections and folliculitis) were found in some of the pools.

The problem is likely the result of swimmers entering the pool while suffering from an upset stomach and leaving trace fecal matter behind. The CDC recommends that you not enter a public pool if you feel unwell, that you ask for a pool inspection report if you’re concerned about the hygiene of the facility, and that you absolutely not swallow any water. The agency also recommends that any pool owner who has experienced a “diarrheal incident” in their water opt for hyperchlorination to kill bacteria.

[h/t Men’s Health]

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