Eat some at each of your meals to get the healthy kind of carbohydrates that will provide you with a slow but steady supply of energy for hours following your meal. (healthyeating.sfgate.com)
But so far, generating an endless supply of energy from nuclear fusion only exists in the movies. (scientificamerican.com)
On the contrary, continued development of remaining fossil fuel resources is essential to provide adequate supplies of energy for the world economy across the many decades that this great transformation will require. (rstb.royalsocietypublishing.org)