The Science of Love (Episode 1)

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Feb 5, 2026

Ann Druyan, author and creative director behind the Voyager Golden Record, shares a personal story about recording her heartbeat and a meditation on love. The conversation covers love as a biological drive, how relationships shape our bodies and microbiomes, maternal bonding and lullabies, and whether romantic love resembles addiction.

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INSIGHT

Love As A Biological Drive

Love functions as a core biological drive essential to human survival and flourishing.
Understanding love scientifically deepens rather than diminishes its meaning.

ANECDOTE

Heartbeat Sent Into Space

Ann Druyan recorded her heartbeat and a love meditation for the Voyager Golden Record with Carl Sagan.
That intimate recording still travels through interstellar space and symbolizes love's place in human expression.

INSIGHT

Relationships Influence Your Microbiome

Close relationships shape our biology down to the microbiome, with friends and partners sharing gut microbes.
Time spent together and shared meals increase microbiome similarity among social groups.

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In a culture that often reduces love to romance, Geena Davis helps us explore the science of love across the lifespan—revealing how our bonds with parents, friends, partners, and communities shape our health, happiness, and survival.

Summary: Love is commonly understood as a feeling, yet scientific research increasingly points to its role as a core biological drive. In this episode of The Science of Love, we explore how love is expressed through caregiving, friendship, romantic attachment, and shared experience, and how these connections leave measurable effects on the brain, body, and even the microbiome.

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Related The Science of Happiness episodes:

The Science of Love Series: https://bit.ly/TheScienceofLove

36 Questions to Spark Love and Connection: https://tinyurl.com/ktcpz78u

How 7 Days Can Transform Your Relationship: https://tinyurl.com/bdh2ezhr

Today’s Guests:

ANN DRUYAN is an author, activist, and documentary producer.

Learn more about Ann Druyan’s work here: https://tinyurl.com/5n8crkev

DANIEL LEVITIN is a neuroscientist, musician, and bestselling author.

Follow Daniel Levitin on IG: https://www.instagram.com/daniellevitinofficial

JESSICA EISE is a social and environmental scientist and is an assistant professor in the Department of Environmental and Occupational Health with Indiana University School of Public Health-Bloomington.

Learn more about Jessica Eise here: https://jessicaeise.com/

ANNA MACHIN is an evolutionary anthropologist who studies the evolution of love.

Learn more about Anna Machin here: https://annamachin.com/

FRANCESCO BEGHINI is a computational biologist at Yale University.

Learn more about Francesco Beghini here: https://tinyurl.com/knm4du4m

ILANA BRITO is a biomedical engineering professor at Cornell University.

Learn more about Ilana Brito here: https://tinyurl.com/mtnhw3yd

CONSTANCE BAINBRIDGE is a Communication PhD student at UCLA.

Learn more about Constance Bainbridge here: http://constancebainbridge.com/

SANDRA LANGESLAG is a cognitive and biological psychologist who studies romantic love.

Learn more about Sandra Langeslag here: https://tinyurl.com/523wc9wx

Message us or leave a comment on Instagram @scienceofhappinesspod. E-mail us at happinesspod@berkeley.edu or use the hashtag #happinesspod.

Help us share The Science of Happiness! Leave us a 5-star review on Apple Podcasts or share this link with someone who might like the show: https://tinyurl.com/2p9h5aap

Funding for this special was provided by the John Templeton Foundation, as part of the Greater Good Science Center's Spreading Love Through the Media initiative.

Transcription: https://tinyurl.com/bfave5wd