December 18th: National & International Days, Celebrations and Observances

Mid-December brings simple holiday activities worth trying.

• Set up a bird feeder - you'll spot cardinals and chickadees within days. Grab a notebook to track these visitors, along with daily weather changes. Weather tracking might sound old-fashioned, but it's a practice dating back centuries.
• Some seniors in our community want to email their grandkids but need computer help. Even basic skills make a big difference. Around town, Las Posadas celebrations are starting up - a perfect chance to experience this tradition firsthand.
• Need a quick productivity boost? Check your typing speed or learn keyboard shortcuts. It beats hunting and pecking at the keys all day.
• Step outside for a short winter walk. The cold air clears your head. Later, ask neighbors about their holiday customs - every family has their own twist on the season.

A violent winter tornado tore through Sunfield, Illinois in 1957. Weather experts had long dismissed the possibility of December twisters, considering them strictly warm-weather events.

NASA launched the Terra satellite from California in 1999. This $1.3 billion observer circles Earth at 705 kilometers, while its five instruments record essential environmental data. Scientists use these measurements of clouds, air quality, and climate patterns to track changes in our atmosphere.

On a cold December afternoon in 2015, the last shift of British coal miners emerged from Kellingley Colliery in North Yorkshire. The 450 workers walked out of the pit for the final time at 12:30 PM.

The Yorkshire mine had pulled coal from deep underground since 1965, yielding up to 2 million tonnes annually. Once the gates closed that day, Britain's centuries-old tradition of deep coal mining ended. The nation's power grid had already begun shifting toward wind farms and nuclear plants, leaving coal mining to the history books.

In 1897, physicist J.J. Thomson identified something remarkable - the electron. His Nobel Prize discovery led to electronic advances, and labs worldwide still rely on his mass spectrometry techniques to analyze pollution patterns.

During South Africa's apartheid years, activist Steve Biko challenged the status quo. He built the South African Students' Organization well before his death in 1977. His writings drew unexpected connections between social rights and environmental problems, an approach that resonates with modern activists.

A single warning crackled over the radio at Mount St. Helens in 1980. USGS scientist David Johnston spotted the danger first, alerting nearby communities moments before the eruption took his life. His methods for predicting volcanic behavior evolved into today's monitoring systems. Visitors to Johnston Ridge Observatory now learn about those crucial final minutes.

Geneticist Esther Lederberg changed laboratory science forever. She first spotted the lambda bacteriophage and developed replica plating - techniques that proved essential. Modern researchers still depend on her methods to examine environmental microbes and study how bacteria resist antibiotics.

Harold Varmus reshaped scientific communication after his Nobel-winning cancer research. As NIH director, he pushed research into public view. Later, by launching PLOS, he gave scientists a new way to share findings. His practical, evidence-driven approach now guides environmental health research across disciplines.