When men with heavy equipment showed up in the parking lot of 714 W. 231st St., earlier this month, neighbors became wary. After all, the neighborhood lies within the Special Natural Area District. Most modifications to buildings and grounds must be cleared with the city before work begins — even if it’s a single, 6-inch diameter tree. more

The ubiquitous three-leaves of poison ivy are becoming more and more common across New York City. more

When I took a physiology class in college, we performed various experiments. Among them was a demonstration of firefly lightning in which we mixed luciferin with luciferase and produced the yellow glow of bioluminescence. more