- The Warrior Within (release date 2024) – Producer, Director, Writer & Editor; independent science documentary
- Stopping the Next Pandemic (2023), developed and wrote the script for shooting this feature documentary, produced by ARTE FRANCE & Georama TV Productions.
- The Cannabis Question (2021) – Writer, Producer & Director; NOVA/PBS
- Decoding COVID-19 (2020) – Writer, Producer & Director; NOVA/PBS
- The Truth About Fat (2020) – Writer, Producer, Director & Editor; NOVA/PBS
- ADDICTION (2018) – Writer, Producer & Director; NOVA/PBS
- Day the Dinosaurs Died (2017) – Writer, Producer, Director & Editor; NOVA/PBS
- The Origami Revolution (2017) – Writer, Producer, Director & Editor; NOVA/PBS
- Can Alzheimer's Be Stopped? (2016) – Writer, Producer, Director & Editor; NOVA/PBS, and Tangled Band Studios
- Mass Extinction: Life at the Brink (2014) – Writer, Producer, Director & Editor; Smithsonian Channel, Tangled Bank Studios
- Cracking Your Genetic Code (2012) – Writer, Producer, Director & Editor; Smithsonian Channel and Tangled Bank Studios
- Long Distance Warrior (2010) – Producer, Director & Editor; PBS
- What Darwin Never Knew (2009) – Producer; NOVA/PBS
- Rx for Survival: A Global Health Challenge (2005) – Six-part mini-series, Writer, Producer, Director & Editor for show 2, Rise of the Superbugs; PBS
- World in the Balance (2004) – Producer, Director, Writer & Editor
- Shackleton's Voyage of Endurance (2002) – Producer, Writer & Editor (Hour 1)
- 18 Ways to Make a Baby (2001) – Producer, Director, Writer & Editor
- Trillion Dollar Bet (2000) – Writer, Producer, & Editor
- MacArthur (2000) – Director, Co-Producer & Editor, American Experience; PBS
- Science Odyssey: Matters of Life and Death (1998) – Co-producer, Editor. A six-part series on PBS
- The Rockefellers, The Richest Man in the World: Andrew Carnegie, Ike, Nixon: (1990-1997) – Editor, American Experience; PBS
NOVA ScienceNow Series (2007-2011) – Writer, Producer, Director & Editor; PBS
- How Does the Brain Work? (Artificial Intelligence segment) –
- Can We Live Forever? (Body Parts segment) – with Neil de Grasse Tyson
- Can We Make It to Mars? (Space Dangers, Space Food segments) – with Neil de Grasse Tyson
- How Memory Works (Anthrax Investigation, Epigenetics segments)