Graham Whitfield

Why Are Redwood Trees So Big? The Science of Their Size

Where Do Ebony Trees Grow and Why Are They So Rare?

How Does Climate Affect Animal Migration Patterns?

What Is Cork Made Of? The Biology of a Natural Material

What Time of Year Do Acorns Fall? A Seasonal Look

Is the James River Polluted? What the Data Shows

What Do Muscadine Grapes Look Like?

What Color Are Maple Leaves in the Fall?

Do Acacia Trees Have Thorns? The Answer & The Reasons

What Is the Link Between Agriculture and Population Growth?

What Plant Has the Largest Leaves in the World?

What Are Some Ways to Minimize Your Water Footprint?

What Is Musk Scent Made From? Animal, Synthetic & Plant Sources

What Tree Has Long Seed Pods? Common Types Identified

How Many Varieties of Eucalyptus Are There?

What Are Interesting Features of Sahara Desert Vegetation?

Are Rainforests Endangered? Causes and Consequences

What Is a Tree Burl and What Causes Them to Form?

What Are the Four Basic Plant Parts?

What Happens When the Atmosphere Interacts With the Biosphere?