Explore speciation with The Amoeba Sisters. This video discusses sympatric and allopatric speciation and covers several types of isolation types including behavioral, temporal, and habitat isolations. Table of Contents: Intro 00:00...

Paul Andersen details the evolutionary processes of speciation and extinction. Stickleback evolution in Lake Loberg is used as example of rapid speciation. Adaptive radiation is illustrated using the Hawaiian honeycreeper. A brief...

Paul Andersen explains how reproductive isolation can eventually lead to speciation. Three main barriers to gene flow are included: geographic, pre-zygotic and post-zygotic. Both allopatric and sympatric speciation are discussed. A...

How does one species evolve into two within the same habitat? Discover the details behind a rare type of evolution: sympatric evolution.

A species is a group of closely related organisms capable of interbreeding and producing fertile offspring, and speciation is the evolutionary process by which new species arise. Speciation can occur through anagenesis (gradual...

In this Nature League Field Trip, Brit joins scientists in the Flathead River system to explore the consequences of genetic introgression between westslope cutthroat trout and rainbow trout.

Celebrate St. Patrick part 14: This video discusses the historical and mythical significance of Saint Patrick in Armagh, the oldest city in Ireland. It explores the legends surrounding his life and the locations associated with him, such...

1. Music clip - 'Breathless,' by the Corrs

2. APTN file footage of St Patrick Day's Parade, New York (
2001)
3. SOT Caroline Corr: "I mean New York is the best place to be for St Patrick's Day it...