Days after telling lawmakers the California Air Resources Board she oversees does not analyze how its clean air rules could impact costs to drivers and consumers, Liane Randolph is now facing calls to ...

PepsiCo says it has converted engines in 20 semi trucks traveling Iowa so it can use 99% biodiesel and cut carbon emissions.

Iowa Secretary of Agriculture Mike Naig said the new pump, which allows certain semi trucks to fill up with a 99% biodiesel ...

An old, rusty 1.5 inch gasoline water pump equipped with a 4-stroke Rato engine undergoes a comprehensive restoration to ...