Ariko Inaoka photographs Icelandic twins Erna and Hrefna.

Extra Links for Lectures
If You've Ever Felt That Ghosts Are Real, Scientists Are Now Backing You Up
The Mathematical Reason All Hipsters Look the Same
Science Has Bad News for That Jerk Who Stole Your Significant Other
Pregnancy Doesn't Actually Make Women Dumber
Why We Gossip: It's Really All About Ourselves
The Psychology of 'Backburner' Relationships
The Problem With Positive Thinking
The Scientific Reason Someone Befriends You Might Freak You Out ... Just A Bit
It is now illegal to distribute food to homeless people in 21 cities
The Knick Finale Mental Illness Treatment for Eleanor Is Real
Walk Like a Happy Person, Be a Happier Person
How One Boy With Autism Became BFF With Apple's Siri
Is Kindness Physically Attractive?
Eating Comfort Foods May Not Be So Comforting After All
What's In A Name? It Could Matter If You're Writing To Your Lawmaker
Why Saying Is Believing�The Science Of Self-Talk
The Evolution of Sleep: 700 Million Years of Melatonin
Grasshopper Dismembered By Future Supreme Court Justice
Mesmerizing Images Show What Sound Literally Looks Like
Why Liberals Love the Disease Theory of Addiction
I Thought It Was Just Stress, Until It Broke My Heart
The Dark Side of Empathy
Why You Feel Obligated to Upgrade All of Your Furniture
Hearing That Things Can Change Helps Teens Dodge Depression
Wherein I Learn Bulimia Doesn't Work, Is More Expensive Than Suspected
How Long Does It Take to Get to Tatooine?
Frat Alumni President Blames 'Drunk Female Guests' For Ruining Fun
Accents Can Influence Perception
These Brilliant Teen Girls Just Helped Solve World Hunger at a Science Fair