Researchers compared two types of observers: a classical extended Luenberger observer and a nonlinear observer to the production of B. thuringiensis.

The state Department of Conservation and Natural Resources is urging Pennsylvania’s forest landowners to start planning now ...

Today, Arizona growers plant as many acres of cotton as their relatives did in 1914, when there were no mechanical pickers, ...

Spongy moth caterpillars are wreaking havoc in wooded lots and forests across Pennsylvania. But the good news is populations appear to be dwindling. It’s the caterpillar stage of the spongy moths, ...