columbia university

Invasive Algae Blooms

In the middle of the Arabian Sea Algae Blooms are taking over the base of the food chain which could prove catastrophic for 120 million people living on the sea’s edge. Joaquim Goes, Research Professor at Columbia University’s Lamont-Doherty Earth Observatory in New York City joins Hari Sreenivasan to discuss this growing problem.

The extinction crisis

A new study is re-evaluating the extinction of thousands of animal and plant species. Leading this project is Columbia University professor and biologist Don Melnik. He joins Hari Sreenivasan to explain why he believes current extinction estimates are vastly underestimated.

More efficient models for environmental sustainability

According to the World Health Organization, the percentage of the world’s population living in urban areas will continue to grow in the upcoming decades. Kartik Chandran from Columbia University in New York City joins Hari Sreenivasan to discuss ways to help us leave a friendlier chemical footprint on this earth by changing the way we […]

The story of retired astronaut Michael Massimino

Not many people can say they’ve graduated both from Columbia University and the Massachusetts Institute of Technology, have published their memoir and have flown space missions with NASA except for our guest. Today, retired astronaut Michael Massimino is a mechanical engineering professor at Columbia Engineering School. He joins Hari Sreenivasan.

Are we alone in the universe?

It’s one of the biggest and most complex questions out there: are we alone in the universe? The field of astrobiology studies the origin, viability and future of life on other planets, and asks, is planet earth really as unique as we think? Caleb Scharf, Director of Astrobiology at Columbia University joins Hari Sreenivasan to […]

What is the climate innovation gap?

Are we investing enough resources in science and climate research? Over the last decade, federal spending on research and development as a percentage of our country’s GDP has been declining. Peter deMenocal, director of Columbia University’s Center for Climate and Life, argues that the shortfall is creating an innovation gap that could impact the security […]

SciTech Now Episode 227

We explore farming on an urban rooftop; Peter deMenocal, director of Columbia University’s Center for Climate and Life, explains the climate innovation gap; unwanted algae is threatening Florida waterways; and a robotic surgical system makes precise surgery faster and easier.

Ruth DeFries explains how the history of human development has impacted our planet.

For as long as humans have roamed the Earth, the advancement of technology has been a major driver of modernization and growth. Ruth DeFries, professor of Ecology and Sustainable Development and Columbia University’s Earth Institute, explains how the history of human development has impacted our planet, as discussed in her book The Big Ratchet.