Brown bear in Silver Salmon Creek, Lake Clark National Park and Preserve, Alaska (© Danny Green/Nature Picture Library)

Chattooga River in the Appalachian Mountains, North Carolina (© mtilghma/Getty Images)

Sunset from Olmsted Point, Yosemite National Park, California, USA (© Robb Hirsch/Tandem Stills + Motion)

This document defines an optional extension to the Simple Two-way Active Measurement Protocol (STAMP) that enables a Session-Reflector to send asymmetrical packets, that is, response packets whose size or quantity differs from those sent by the…

Male bearded reedling, Norfolk, England (© Andrew Sproule/Shutterstock)

The blue, glacier-fed waters of the Kasilof River, Alaska, USA (© jared lloyd/Getty Images)

nikitonsky: I was wondering what a play button does on an already playing video. Turned out first video was a “cover image” for another video!

Sattais Katcheri Hall in Amber Fort near Jaipur, Rajasthan, India (© R.M. Nunes/Getty Images)

Decorator crab on a sea pen, Komodo National Park, Indonesia (© Alex Mustard/Nature Picture Library)

Cedar Mesa and Muley Point near Bears Ears National Monument, Utah, USA (© Jeff Clay/Tandem Stills + Motion)