Sigma is the eighteenth letter of the Greek alphabet. However in 2010, “the ‘sigma male’ term was coined by the far-right writer Theodore Robert Beale as a counterpoint to the alpha/beta male ...

Sigma is the eighteenth letter of the Greek alphabet. However in 2010, “the ‘sigma male’ term was coined by the far-right writer Theodore Robert Beale as a counterpoint to the alpha/beta ...

Banner image of a Darwin’s frog and newborn at London Zoo, courtesy of Benjamin Tapley/ZSL. Correction 04-16-2025: Previous version states that “male frogs were carrying fertilized eggs.” ...

Which means, there needs to be some strategy. Up first, the male frogs start with their advertisement calls. Alejandro Vélez: That call has two main functions. The same call helps to repel other ...

A new frog species has been discovered in Assam's Garbhanga Reserve Forest. Researchers named it Leptobrachium aryatium. The discovery highlights the region's rich biodiversity. Scientists studied ...

Seen from below, golden line nurse frogs have “yellowish,” white or “translucent” bellies, the study said. Male frogs have “iridescent pigmentation” on their stomach, while female ...

The Sigma BF takes beautiful photos with its 24.6MP sensor and it comes with 13 built-in Color Modes for every mood. Video capabilities are strong, with 6K/30P and L-Log available. The camera’s ...