Author: Janet Loehrke, USA TODAY

The milestones and the evolution of the American flag and tips for proper display.

Lightning is a threat throughout the summer. Here are some lightning facts and tips to keep you safe this season.

Is population declining?

Wider visibility of the northern lights, or aurora borealis, is becoming more common. Here’s a visual explainer of how and why they occur.

Handle with care: The hemlock plant is toxic to humans and animals

According to the American Stroke Association, strokes are the fifth-leading cause of death in the US. This visual guide helps you spot the symptoms.

Queen Elizabeth II’s eldest son, Charles, has become king. A look at the royal family succession.

The coronation of King Charles will take place May 6. Graphics give an inside look at the historic ceremony.

King Charles’ coronation procession route will take royals from Buckingham Palace to Westminster and back again.

Experts predict the invasive spotted lanternfly could reach the West Coast by 2033, threatening trees and the billion-dollar fruit industry.