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Grades 9-12


Young Naturalist Awards Essay

From the Desert to the Subalpine Forest

This young naturalist used a trip to the Grand Canyon to test her hypothesis: the higher the elevation, the greater the number of species of flora that would be present.


Young Naturalist Awards Essay

Trails in the Snow: The Effects of Reforestation on Mammal Distribution in the Baraboo Hills

The first snowfalls of winter have transformed the landscape into a pristine, silent, unscathed world. The sounds of birds and animals that are so casual in other seasons are now magnified by silence. The bark of a squirrel is crisp and suspended in time, like the lingering imprint her paws leave on the snow.  Winter is the invigorating cold, the silent struggles for survival, the stories written by paws and hooves on the snow; small details that could easily not be noticed.


Science Bulletin

Thinking in Symbols

Modern human culture underwent a "creative explosion" in Ice Age Europe 40,000 to 10,000 years ago. The evidence, which ranges from fantastic cave paintings to elaborate graves to innovative tools, is a sure sign that human symbolic thought-our ability to create and combine meaningful symbols to represent the world-was in full bloom. What evolutionary steps seeded this mental flowering? This Human Bulletin video follows the ongoing excavations of Christopher Henshilwood, an archaeologist who is seeking the earliest evidence of our species' unique mental powers. Recent finds dating to 72,000 years ago at his South African excavation site, Blombos Cave, are slowly shedding light an era of human culture that has been all but dark.

Aiming High: The Search for Ultra

Science Bulletin

Aiming High: The Search for High-Energy Cosmic Rays

The history of cosmic ray research is a story of scientific adventure. For nearly a century, cosmic ray researchers have climbed mountains, soared in hot air balloons, and traveled to the far corners of the Earth in the quest to understand these energetic particles from space. They have solved some scientific mysteries—and revealed many more. With each passing decade, scientists have discovered higher-energy and increasingly more rare cosmic rays. The Pierre Auger Project is the largest scientific enterprise ever conducted to search for the unknown sources of the highest-energy cosmic rays ever observed.


Young Naturalist Awards Essay

Bear Brook: Strong Evidence of Pollution

To the human eye, Bear Brook seemed devoid of life. But was that really the case? See how this young naturalist investigated the brook's ability to sustain life.


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