Там не только инженерные для диаграмм Writing Task 1, но и разные научные области для Reading, Listening и Speaking

AsapSCIENCE - Your weekly dose of fun and interesting science.

CrashCourse - courses in physics, philosophy, games, economics, U.S. government and politics, astronomy, anatomy & physiology, world history, biology, literature, ecology, chemistry, psychology, and U.S. history.

SmarterEveryDay - explore the world using science.

In a Nutshell - animation videos explaining things.

SciShow - Biology, Physics, Chemistry

MinuteEarth - Earth science, Ecology, Climate, Geology, Biology

Numberphile - Maths