May 31st: National & International Days, Celebrations and Observances

Here's what matters on May 31st. Head to your local beach or park - it's amazing how much wildlife benefits when we clean up their space. Parrots especially need these habitats.

• Found a quiet spot outside? Take ten minutes there. Sometimes that's all you need.
• The facts about tobacco's environmental damage need sharing. And while you're thinking green, look for those wood products that help keep parrot forests standing.
• Hurricane season's around the corner - might be time to sort through your emergency kit.
• Feel like exploring? Utah's parks are worth seeing, whether you walk their trails or check out their online tours.
• Grab that reusable mug instead of another paper cup.
• Better yet - flash a quick smile at someone nearby. Trust me, it matters.

Four events worth noting happened on May 31st.

• Blaxland, Wentworth, and Lawson trekked across Australia's Blue Mountains in 1813. The 50-mile path they cut through rough terrain opened routes for colonial expansion. This breakthrough ended thousands of years of Aboriginal control over their traditional lands.
• A wall of water crashed through Pennsylvania towns in 1889. The South Fork Dam broke apart, sending a 40-foot flood racing downstream for 14 miles. Within an hour, 2,209 people died. Engineers rewrote safety standards after this disaster.
• The Trans-Alaska Pipeline stretched to completion in 1977. Workers built 420 miles of the 800-mile pipeline above ground. This design let moose, caribou, and other wildlife walk underneath - though some still debate its impact on local habitats.
• A large space rock passed by Earth in 2013. Known as asteroid 1998 QE2, it measured 1.7 miles wide but stayed 3.6 million miles away. Astronomers noticed something odd: a smaller asteroid, about 2,000 feet across, trailed behind it.

Several scientific advances and cultural shifts happened on May 31st.

• Walt Whitman's "Leaves of Grass" appeared in print in 1855. The book shook up American poetry. Later, as he tended wounded soldiers in the Civil War, he wrote "This Compost" - raw observations about life and nature.
• The year 1887 brought a practical solution to a common lab problem. Julius Richard Petri designed a flat glass dish for growing bacteria. His simple tool let scientists study microbes, test drinking water, and examine soil samples clearly for the first time.
• Chien-Shiung Wu tackled tough questions in nuclear physics. After becoming the first woman to lead the American Physical Society, she developed exact ways to measure radiation. Labs worldwide still rely on her techniques.
• William Nordhaus connected economics to environmental damage. His DICE model turned abstract climate impacts into solid numbers. This work shaped today's carbon pricing systems.
• David Leigh's current research at Manchester University focuses on molecular machines. His team's work points to better, cleaner ways to make chemicals.