If you are stuck to a rock it is tricky to get close enough to a partner to mate. One solution to this problem would be to release eggs or sperm into the open water, which is what many animals in this situation do. Acorn barnacles (Semibalanus balanoides), however, found a different solution. They have evolved the longest penis relative to their body size of any animal. In this video the penises of several barnacles are probing the neighborhood for mates. The penis is re-grown each mating season.

Sophia Tintori and Cassandra Extavour talk about the evolution and development of multicellular organisms, and in particular the specialization of reproductive cells.

Riley Thompson made this animation about the fascinating lifecycle of narco babies. We usually don’t think of babies that grow inside their mothers as parasites, but sometimes the lines get very blurry. This is especially true in Narcomedusae, a group of poorly known jellyfish found throughout the world’s oceans.

Robert Sandler tells the story of ocean slime, using stop motion and jellyfish puppets. Robert made this episode with support from the Society of Royce Fellows.

This video demonstrates some of the features of PhyloTree. It then shows the early explosive discovery of mammal species (most major mammal groups were discovered early on), and then shows the slow and steady discovery of cnidarians (many cnidarians remain to be described). The tool can also be used to quickly find the first species that was described in a group. The first siphonophore to be described, for example, was Physalia physalis (the Portuguese man o’ war).

Alysse Austin, a student in Casey Dunn’s Invertebrate Zoology course at Brown University, describes sexual dimorphism in green spoonworm.

Here is a semi-interactive video (with the option of a single, non-interactive video here) from CreatureCast alum Sophia Tintori, featuring tips from a handful of ocean-dwellers that each have drastically different approaches to being invisible.

In this first video, Alison Sweeney talks about work that has been done in the Morse lab on Squid iridescence.

Precise modification of faulty genes for repair has been one of the most important goals in medicine. It is now finally within the realm of possibility thanks to the gene editing tool CRISPR. This microbial adaptive immune system can copy and cut specific DNA sequences. This animation provides a visual introduction of this revolutionary genetic tool.

Critical Language Service offers playlists with video lessons that explain the material in Alif Baa, Al-Kitaab 1 (through lesson 11), and a series on Egyptian vocabulary. Videos designed for the Alif Baa series focus on stories to illustrate new vocabulary while the series designed for Al-Kitaab explains grammatical concepts introduced in the books, and demonstrate proper pronunciation. They also offer a playlist of 60 cartoon episodes in Arabic.

Are you confident you can reason clearly? Are you able to convince others of your point of view? Are you able to give plausible reasons for believing what you believe? Do you sometimes read arguments in the newspapers, hear them on the television, or in the pub and wish you knew how to confidently evaluate them? In this six-part course, you will learn all about arguments, how to identify them, how to evaluate them, and how not to mistake bad arguments for good. Such skills are invaluable if you are concerned about the truth of your beliefs, and the cogency of your arguments.

In this Cyberchase video segment, Shari Spotter gets help from the CyberSquad in doubling a recipe for crumpets.

With ever increasing cultural diversity in our schools, how do educators establish and maintain effective relationships with those whose experiences and beliefs differ from their own? Dr. Darryle Craig, program manager for Fairfax County Public Schools College Success Program, presents her ideas and strategies for becoming "Culturally Competent.” According to Dr. Craig—cultural competency is “the ability to interact effectively with people from different cultures.” During the program, Dr. Craig defines and examines the importance of cultural competence. Using first-hand examples and questions from the studio audience, Craig advises how to use this important skill to help close the achievement gap, and promote best practices that create success among diverse learners.

CultureTalk - Arab World features native speakers from across the Arabic-speaking world giving filmed interviews, in Arabic and sometimes English, on selected topics. Text-based translations and transcriptions are often provided as downloadable documents for most Arabic videos. The videos engage a number of region/country-specific topics, including cultural traditions, religion, politics, and sports.

CultureTalk - Arab World features native speakers from across the Arabic-speaking world giving filmed interviews, in Arabic and sometimes English, on selected topics. Text-based translations and transcriptions are often provided as downloadable documents for most Arabic videos. The videos engage a number of region/country-specific topics, including cultural traditions, religion, politics, and sports.

Data on Chinese / U.S. balance of payments. [Economics playlist: Lesson 17 of 20]

Motivated by the limitations of both public and private schools to meet the needs of his son, Internet Archive founder Brewster Kahle and his wife embarked on a mission to create an educational experience customized to their son. Inspired by their results, Kahle set out to determine if this model of customized education could scale beyond those who could afford it. He shares his surprising findings in this Big Ideas Fest presentation.€÷

We take a quick look at how to customize the background in your PowerPoint presentation. I use both Microsoft PowerPoint 2013 and Microsoft PowerPoint 20111 on Mac.

How to change background in powerpoint 2013

This presentation covers the legal environment of cybercrime to date. It addresses: the challenges of law enforcement; federal government vs. state jurisdiction of cybercrime; law enforcement department and agencies which handle cybercrime; criminal statutes and privacy statutes.

Have you ever felt uneasy or even dreadful after losing a USB flash drive that might contain sensitive information or data about your business?

This presentation will give you a tool to put you at ease when backing up a large number of files and data to a USB flash drive or stick. The tool is relatively easy to use on a USB drive, is based on encryption technology, and protects your business data from the prying eyes.

Attendees will learn about the following topics:
- A brief introduction to data encryption.
- A few encryption tools for a novice user.
- Demonstration on how to use an encryption/decryption tool called VeraCrypt to protect the data on a USB
flash drive.
- Pros and cons of encryption/decryption technology.