crow cigarette cleaning Crows in Sweden help clean streets by exchanging trash for food In Sweden, group of crows

2,3-Butanedione Commonly known as diacetyl, 2,3-Butanedione is a chemical naturally found in foods like coffee, honey and some fruits, and is commonly used in food production to achieve a buttery or sweet taste

(Welcome!) $26 billion

There are also apps and support groups for smokers looking to quit

Love gave me a reason to stay here. #GQStyle bit.ly/GQStyleMGKMegan.@machinegunkelly: I remember she really fell in love when I made her die laughing in a fort we made in her living room. @TheGQStyle bit.ly/GQStyleMGKMegan#MeganFox: I did a lot of work to remove that feeling of being a victim [of being overly-sexualised in her early career] and to realise that it was a lesson

A systematic review and meta-analysis of one hundred and twenty studies involving 177,390 individuals