Updated April 05, 2016. Nasal saline irrigation has been shown to be a beneficial therapy in the treatment and prevention of sinus infections and allergic rhinitis. This non-pharmacologic therapy involves rinsing the nasal passages with a salt-water solution, helping to rid the nose of allergens and mucus.
The goliath birdeater tarantula of South America is arguably the biggest spider in the world. Watch as one hapless mouse wanders into a spider's deadly trap, and see the unusual adaptations that make the goliath one of nature's deadliest ambushers.
These terrifying pictures show a spider which is the size of a small dog complete with two-inch fangs. Scientist Piotr Naskrecki was in a South American rainforest when he heard a noise from the undergrowth. Expecting it to be a rat, he was left astonished when he saw this monster. It turned out to be the South American Goliath Birdeater - the largest spider in the world. Incredibly, the spider has a leg span which can grow up to a foot - which is the size of a child's forearm. They can also weight more than 6 ounces and come complete with two-inch fangs full of venom.