Most of the reserves in the country are extra-heavy oil that’s tough to extract and generates more greenhouse gases.

TOKYO (AP) — Japan's space agency said its H3 rocket carrying a navigation satellite failed to put the payload into a planned orbit, a setback for the country's new flagship rocket and its space ...

While fresh oil is generally transparent and amber colored, black oil may mean it's time for a replacement and frothy oil can ...

Venezuela has the largest oil reserves of any country on Earth. But the type of oil it has is difficult, and dirty, to process. Experts say ramping up production would be expensive, and dangerous for ...

Dec. 22 (UPI) --Japan's H3 rocket faced issues Monday during its seventh launch attempt. The H3 rocket lifted off from the Tanegashima Space Center at 8:51 p.m. EST Sunday night in Japan carrying the ...