How light at night disrupts insect navigation, bird migration, bat foraging, marine turtle nesting, and plant phenology. Peer-reviewed findings and field data.
Coastal ALAN penetrates several metres into the water column, shifts predator-prey encounter rates, desynchronises coral spawning cycles, and extends the effective day length for photosynthetic organisms at the…
For roughly 150 million years, sea turtle hatchlings have found the ocean the same way: by moving toward the brightest, lowest point on the horizon — under natural…
One streetlight. Several hundred insects per night — drawn in, exhausted circling, dead before dawn. Knop et al. (2017, Nature 548:206–209) quantified what happens at the ecosystem level:…
Roughly one billion birds are killed each year in North America alone by building collisions linked to artificial light at night (ALAN). In Europe the scale is less…
Artificial light at night (ALAN) disrupts the biological rhythms, migration routes, and reproductive cycles of nearly every wildlife group studied — from migratory songbirds to soil bacteria. European…
