Kelly April Tyrrell



A tree shines yellow near the UW–Madison Arboretum
Each year, as August fades into September here in southern Wisconsin, it always seems to take me by surprise to see the bright greens of spring and summer subtly transition to the goldens and burgundys of autumn. The trees and prairies slowly changing their attire. “But isn’t it too soon?” […]

Why do leaves change color in the fall?




The Milky Way over the Southern African Large Telescope in the Southern Hemisphere, as seen on July 18, 2017. Photo by Jeff Miller, UW-Madison
Today (yesterday, as you read this) we departed Johannesburg, headed toward Madison by way of Atlanta. As I type this sentence, we are 7,371 miles away, six miles above the Earth, soon to be over ocean. Our South African journey culminated as it began, in the Cradle of Humankind, in pursuit of […]

Gifts and serendipity






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Perhaps you’ve noticed: It’s spring and the Plants Are Blooming. Maybe it’s the smell of the lilacs, or the buzzing of bees. Or perhaps it’s the lush greens and bursts of color blurring your field of vision. But have you ever wondered how the landscape transitions from the brown drab of […]

Why flowers need winter