Beaches around the world are erode faster than we've ever seen. Some efforts to save them involve adding more sand from offshore -- but can that really work? Learn more in this episode of BrainStuff.Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htmAnd to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices
