Fruit and Spice Park to stay an active garden club member and develop insights on the different fruits that should be planted until she passed away in 1979. In memory of her and Preston B. Bird, South Date County renamed the Redland Fruit and Spice Park to the Preston B. Bird & Mary Heinlein Fruit and Spice Park in 1980. The park contains more than 500 varieties of fruits, nuts, and spice trees. It also includes more than 80 banana trees, 160 varieties of mango trees, more than 40 varieties of grape trees, and 70 varieties of bamboo trees. It also features guava, jackfruit,
Palm oil biofuel and utilizing the palms as carbon sinks. While only 5 percent of the world's vegetable oil farmland is used for palm plantations, palm cultivation produces 38 percent of the world's total vegetable oil supply. In terms of oil yield, a palm plantation is 10 times more productive than soya bean and rapeseed cultivation because the palm fruit and kernel both provide usable oil. The Roundtable on Sustainable Palm Oil (RSPO) was created as a lobby group by industry in 2004 following concerns raised by non-governmental organizations about environmental impacts related to palm oil production. The organization has established international