Trigonometric graphs can be sketched when you know the amplitude, period, phase and maximum and minimum turning points. Learn about graphs of trigonometric functions in this National 5 Maths guide.

Pasco High School bilingual math teacher Gabriela Whitemarsh stands in front of Seattle artist Steve Gardner’s “Where Will You Go?” mural on campus. The 2010 piece depicts two people in a boat and ...

HydroGraph Clean Power is revolutionizing graphene production with a patented detonation synthesis technology that is safer, cleaner, and more scalable than traditional methods. The company’s graphene ...

A version of this story appears in the September 2020 issue of National Geographic magazine. Philadelphia detected its first case of a deadly, fast-spreading strain of influenza on September 17, 1918.

Arthur Busch received his B.A. in 1997 from the University of Washington, and worked as a programmer in the investment and oil and gas industry in Denver. He received his Ph.D. in 2005 from the ...