On this week’s Tech Nation, Moira speaks with SCIENTIFIC AMERICAN columnist MICHAEL SHERMER about his book, “The Moral Arc ... How Science and Reason Lead Humanity Toward Truth, Justice, and Freedom” about how science and reason shape humanity over time.

Then on BioTech Nation, a South African firm makes strides in modelling the human body. Ever since computers have been on the scene, scientists have been trying to model the human body. The problem is: It’s really, really hard to do. DR. RIANN CONRADIE is the Executive Founder of LIFEQ based in Stellenbosch, South Africa.

Then Moira speaks with ROBERT COULL, CEO of SCIODERM, about their new success in treating EB – Epidermolysis Bulossa – a genetic disease described as the worst disease you never heard of.