Jonah Lehrer

£8.49

Kirsten Grind and Katherine Sayre

£8.49

Devon Price Ph.D.

£8.49

Amrita Tripathi, Abhijit Nadkarni, and Soumitra Pathare

£7.99

Amrita Tripathi and Kamna Chhibber

£4.99

Michelle Ribeiro

£9.49

Clay Drinko

£8.49

Christina S. Wilcox

£9.49

Carey Davidson

£8.49

Gina Gomez

£8.49

Steven Hassan

£0.99

Carl Honoré

£6.99

Amrita Tripathi and Arpita Anand

£6.49

Karyl McBride

£9.99

Sherianna Boyle

£7.99

Howard S. Becker

£7.99

Lloyd Sederer

£9.99

(Part of TED 2)

Alan Lightman

£5.99

Donna Jackson Nakazawa

£9.99

Angela C. Santomero and Deborah Reber

£8.99