Health Series (Series tickets available) The new Health series from New Scientist events presents three online evening lectures (live and on-demand) in 2021, covering topics including the science of metabolism, a guide to self help and diet and exercise. Save 25% off the standard ticket price by purchasing a series ticket to three live online Health series lectures or purchase a ticket to one lecture for just £13 (early booking rate | £15 standard rate). Herman Pontzer, Evolutionary biologist Why do so many diets lead to more weight gain? Do more active people have faster metabolisms? Is exercise essential for weight loss? Over the past 20 years, evolutionary biologist Herman Pontzer has conducted ground-breaking studies across a range of settings, including pioneering fieldwork with Hadza hunter-gatherers in northern Tanzania.