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This volume covers the most cutting-edge pretreatment processes being used and studied today for the production of biogas during anaerobic digestion processes using different feedstocks, in the most efficient and economical methods possible. As an increasingly important piece of the «energy pie,» biogas and other biofuels are being used more and more around the world in every conceivable area of industry and could be a partial answer to the energy problem and the elimination of global warming.

A few years ago, Chimamanda Ngozi Adichie received a letter from a dear friend from childhood, asking her how to raise her baby girl as a feminist. Dear Ijeawele is Adichie's letter of response.Here are fifteen invaluable suggestions–compelling, direct, wryly funny, and perceptive–for how to empower a daughter to become a strong, independent woman. From encouraging her to choose a helicopter, and not only a doll, as a toy if she so desires; having open conversations with her about clothes, makeup, and sexuality; debunking the myth that women are somehow biologically arranged to be in the kitchen making dinner, and that men can «allow» women to have full careers, Dear Ijeawele goes right to the heart of sexual politics in the twenty-first century. It will start a new and urgently needed conversation about what it really means to be a woman today.

There has been a mistake!When best friends Becca Mercer and Turner McCloud go to a hypnotherapist, they expect to be cured of their smoking habit. Clearly the treatment hasn't worked, because they're both still smoking. Oh, and now they're having sex. Lots and lots of sex. And it's definitely changing things between them.Lovers come and go, but friends? Is she ready to sacrifice her best bud for the sake of a little–okay, a lot–of seductive satisfaction? And yet, how can she possibly resist such an indecently sensual suggestion?Can men and women have sex and still be friends?