13990639 - Sudanese workers throw buckets to each other in an efficient way of transporting sand to help preserve archeological remains.,Meroe,Sudan,Africa.10305864 - Close-up of carp fishes in Efficient City Farming, Schoneberg, Berlin, Germany71340099 - Weligama, Matara District, Southern Province, Sri Lanka, Southern Asia. A Stilk Fisherman at sunset. Now abandoned in favor of more efficient contemporary forms of fishing, sitting on these stilts has been for centuries the most common way to catch fish on the shores of South Sri Lanka.71326347 - Fried egg jellyfish or Mediterranean jellyfish, Cotylorhiza tuberculata. It's the most common jellyfish of their entire order in the Mediterranean Sea. Hosts symbiotic zooxanthellae on its body that provide it with energy for usage and storage.This jellyfish as been studied due to their specified cytotoxicity in regards to certain breast cancer cells, which is made possible due to the organism’s efficient intercellular gap junction communication. Since a main objective in cancer research is to create treatments that selectively kill malignant cells while leaving healthy ones intact, Cotylhoriz70245382 - UGANDA Making a mud, fuel-efficient wood burning cooking stove, Kayunga District70358677 - Woman using energy efficient light bulb powered by wind turbine
