Data skeptic Cathy O’Neil uncovers the dark secrets of big data, showing how our "objective" algorithms could in fact reinforce human bias.

Scott Rickard is passionate about mathematics, music -- and educating the next generation of scientists and mathematicians.

Randall Munroe sketches elegant and illuminating explanations of the weird science and math questions that keep geeks awake at night.

Radio host Adam Spencer fills Sydney's drive-time mornings with smart math and science talk.

Computer programmer John Graham-Cumming keeps geek history alive by raising awareness for its heroes and their inventions.

Eduardo Sáenz de Cabezón links science with humor and stories.

Conrad Wolfram runs the worldwide arm of Wolfram Research, the mathematical lab behind the cutting-edge knowledge engine Wolfram Alpha.

Dan Meyer is exploring the way we teach teachers to teach kids.

Using daring displays of algorithmic trickery, lightning calculator and number wizard Arthur Benjamin mesmerizes audiences with mathematical mystery and beauty.

Oxford's newest science ambassador Marcus du Sautoy is also author of The Times' Sexy Maths column. He'll take you footballing with prime numbers, whopping symmetry groups, higher dimensions and other brow-furrowers.

2012 World Poetry Slam Champion Harry Baker has travelled the world off the strength of his way with words. He combines the nerdiness of being a math student with the hopefulness of being a human.

Max Little is a mathematician whose research includes a breakthrough technique to monitor – and potentially screen for – Parkinson's disease through simple voice recordings.

Benoit Mandelbrot's work led the world to a deeper understanding of fractals, a broad and powerful tool in the study of roughness, both in nature and in humanity's works.

Greg Lynn is the head of Greg Lynn FORM, an architecture firm known for its boundary-breaking, biomorphic shapes and its embrace of digital tools for design and fabrication.

Journalist Gary Wolf spends his days in pursuit of the most fascinating things. As a contributing editor at Wired, he's written about technology, mushroom hunters, venture capitalists ...

Hannah Fry researches the trends in our civilization and ways we can forecast its future.

Best known as the voice of Roger Rabbit, Charles Fleischer's multi-decade career includes work on stage and on screen, and an online emporium of unusual observations called MonkeyDog.

Sal Khan is the founder and CEO of Khan Academy, a nonprofit organization on a mission to provide free, world-class education to anyone, anywhere.

After astonishing success as a mathematician, code breaker and billionaire hedge fund manager, Jim Simons is mastering yet another field: philanthropy.

Stephen Hawking's scientific investigations shed light on the origins of the cosmos, the nature of time and the ultimate fate of the universe. His bestselling books for a general audience have given an appreciation of physics to millions.

A consultant to the CIA and the Department of Defense, Bruce Bueno de Mesquita has built an intricate computer model that can predict the outcomes of international conflicts with bewildering accuracy.

Kitchen-sized fish farms, living air purifiers and devices that turn old water bottles into martini shakers all spring from the form-and-function-fusing mind of designer Mathieu Lehanneur.

By masterminding a project to model a coral reef armed only with crochet hooks, Margaret Wertheim hopes to bring some of the most complicated mathematical models embodied in our universe into the minds (and hands) of the masses.

Neil Turok is working on a model of the universe that explains the big bang -- while, closer to home, he's founded a network of math and science academies across Africa.

Alex Wissner-Gross applies science and engineering principles to big (and diverse) questions, like: "What is the equation for intelligence?" and "What's the best way to raise awareness about climate change?"

Jonathan Drori commissioned the BBC's very first websites, one highlight in a long career devoted to online culture and educational media -- and understanding how we learn.

As an information theorist and computer scientist, David MacKay uses hard math to assess our renewable energy options.

In his work in applied mathematics, Steven Strogatz studies the way math and biology intersect.

Alan Smith uses interactive graphics and statistics to breathe new life into how data is presented.

Stephen Wolfram is the creator of Mathematica and Wolfram|Alpha, the author of A New Kind of Science, and the founder and CEO of Wolfram Research.