Yik Yak works by combining the technologies of GPS and instant messaging, allowing users to anonymously microblog to other nearby users. Before loading messages, the Yik Yak app determines the user's location and groups them into pockets of 1.5 mile (2.4 kilometre) radius zones. Within these zones, anyone inside the radius can post and read other people's âyaksâ. Yik Yak is effectively an anonymous bulletin board.
All parts of the plant are poisonous. If chewed or swallowed symptoms can cause immediate pain or a burning sensation and swelling of the lips, mouth, tongue and throat. Contact dermatitis may also occur in sensitive individuals.ll parts of the plant are poisonous. If chewed or swallowed symptoms can cause immediate pain or a burning sensation and swelling of the lips, mouth, tongue and throat. Contact dermatitis may also occur in sensitive individuals.
Giant hogweed (Heracleum mantegazzianum) has the worst reputation for it, but âfriendlyâ plants such as carrots, celery and limes can all blister the skin in the wrong conditions. One of the worst untouchable species, whatever the weather, earns the dubious honour of being the worldâs most dangerous tree.Thereâs a difference between poisonous and harmful. You can say whatâs the most poisonous plant fairly easily â theoretically looking at the toxins in it and what they can do,â says John Robertson.