Gunung Leuser National Park is a national park covering 7,927 km² in northern Sumatra, Indonesia, straddling the border of North Sumatra and Aceh provinces. The national park, named after Mount Leuser (3,381 m), protects a wide range of ecosystems. An orangutan sanctuary of Bukit Lawang is located inside the park. Together with Bukit Barisan Selatan and Kerinci Seblat national parks it forms a World Heritage Site, Tropical Rainforest Heritage of Sumatra.

Some students have to much time on their hands. These students took some of that extra time and made something very creative out of it. Take a look at some of these hilarious text book drawings.

Synalpheus iocasta; Singapore Marine. (Photo by Arthur Anker)

“The McDonnell Douglas KC-10 Extender is an air-to-air tanker aircraft in service with the United States Air Force derived from the civilian DC-10-30 airliner. The KC-10 was the second consecutive McDonnell Douglas transport aircraft to be selected by the US Air Force following the C-9 Nightingale. The similar KDC-10 is in service with the Royal Netherlands Air Force.”

Photo: A B-52G Stratofortress aircraft takes off with another B-52G close behind. Three cells of six B-52 and KC-10 Extender aircraft will takeoff seconds apart under combat conditions during the minimum interval takeoff exercise. The exercise is a part of an operational readiness inspection by the Strategic Air Command Inspector General Team. (Photo by USAF). 1998

“Kopi luwak (Malay pronunciation), or civet coffee, is one of the world's most expensive and low-production coffee. It is made from the beans of coffee berries which have been eaten by the Asian Palm Civet (Paradoxurus hermaphroditus) and other related civets, then passed through its digestive tract. ...

Videographer Jay Baron, from Utah, spends up to nine hours cooking super small dishes and serving them up to his YouTube audience. The tiny portions feature cuisine from all over the world, from ultra-American apple pie to Japanese ramen. The 22-year-old confines himself to cooking in a 2ft by 2ft box, so the only heat he can use comes from a tea light. Here: Jay cooks the ingredients of the tiny spaghetti on the tiny stove. (Photo by Jay Baron/Caters News)

A biplane taking part in the Vintage Air Rally lands, in Stellenbosch, near Cape Town, South Africa December 16, 2016. (Photo by Mike Hutchings/Reuters)