An invasion of cheats: The evolution of worthless nuptial gifts
...hy females of some species require an inedible and worthless gift remains unexplained. In experiments reported ... of a large edible gift, the females receiving the worthless cotton ball token were sufficiently tricked to allow males to copulate for as long as when the males...Extravagant but worthless gifts help a guy get the girl
... a mathematical model that shows how expensive but worthless gifts may help facilitate courtship. Reporting in ...n extravagant gift, which is costly to the man but worthless to the woman, may solve the problem. A costly gift signals the man has long-term intentions but by ...U of M researchers invent 'flashy' new process to turn soy oil, glucose into hydrogen
...hed Nov. 3 in Science. "It's a way to take cheap, worthless biomass and turn it into useful fuels and chemicals," said team leader Lanny Schmidt, a Regents Professor of chemical engineering and materials science at the university. "Potentially, the biomass could be used cooking oil or even products from cow m...