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.
Native to Brazil, Uruguay, Paraguay and Argentina, the Brazilian Giant Tawny Red is a spider that is among one of the biggest in the world. It can have a leg span of up to 10.2-inches.