Signatures From the Past

Caltech researchers have pushed the frontier of isotope geochemistry since the 1950s, using isotopes to discover Earth’s age, analyze lunar samples obtained by the Apollo missions, and understand ancient climate records preserved in natural environments.

FEATURES

He Animated Elsa’s Hair in 'Frozen.' Now He Wrangles Ants in a Caltech Lab

He Animated Elsa’s Hair in 'Frozen.' Now He Wrangles Ants in a Caltech Lab

Caltech Prepares for the Future of Sample Return Science

Caltech Prepares for the Future of Sample Return Science

Signatures From the Past

Signatures From the Past

Ripples From the Heart

Ripples From the Heart

Meet the 2024 Distinguished Alumni

Meet the 2024 Distinguished Alumni

The Lab in the Sky Says Goodbye

The Lab in the Sky Says Goodbye

The Algebra of Language

The Algebra of Language

What it Means to Name a Mineral

What it Means to Name a Mineral

How Wearable Sensors Will Transform the Practice of Medicine

How Wearable Sensors Will Transform the Practice of Medicine

A Big Eye on the Universe: 75 Years of the Palomar Observatory

A Big Eye on the Universe: 75 Years of the Palomar Observatory

The Roots of the Matter

The Roots of the Matter

This Caltech Alum Helps Farmers Get Paid to Store Carbon in Their Soils

This Caltech Alum Helps Farmers Get Paid to Store Carbon in Their Soils

So You Decided to Build a Jellyfish Treadmill

So You Decided to Build a Jellyfish Treadmill

What Computer Vision Can Tell Us About the Natural World

What Computer Vision Can Tell Us About the Natural World

Caltech’s Astronomers Teach You What to Find in the Night Sky

Caltech’s Astronomers Teach You What to Find in the Night Sky

New Class Teaches Caltech Students Start-Up Skills

New Class Teaches Caltech Students Start-Up Skills

Policy in Progress

Policy in Progress

The 2023 Distinguished Alumni Awards

The 2023 Distinguished Alumni Awards

Building Community: How the First-Year Success Research Institute Forges Long-lasting Bonds

Building Community: How the First-Year Success Research Institute Forges Long-lasting Bonds

How an Undergraduate Came to Work on Caltech’s Space Solar Power Demonstrator

How an Undergraduate Came to Work on Caltech’s Space Solar Power Demonstrator

Walking the Moore Walk

Walking the Moore Walk

Solar Power at All Hours: Inside the Space Solar Power Project

Solar Power at All Hours: Inside the Space Solar Power Project

The Professor of Musical Comedy

The Professor of Musical Comedy

New Generative AI Course Brings the Cutting Edge to the Caltech Classroom

New Generative AI Course Brings the Cutting Edge to the Caltech Classroom

The Program That Lets High School Students Dip Their Toes in University Research

The Program That Lets High School Students Dip Their Toes in University Research

Caltech Class Project Turns Seawater into Hydrogen Fuel

Caltech Class Project Turns Seawater into Hydrogen Fuel

Best in Class: Caltech's Initiative for Students

Best in Class: Caltech's Initiative for Students

Carbon Capture Goes Out to Sea

Carbon Capture Goes Out to Sea

The Startup That Captures CO2 Out of Thin Air

The Startup That Captures CO2 Out of Thin Air

Moon Gazing: The Long Story of Lunar Research at Caltech

Moon Gazing: The Long Story of Lunar Research at Caltech

SOCALTECH

#SoCaltech: Nivedita Mahesh

#SoCaltech: Nivedita Mahesh

#SoCaltech: Drew Miles

#SoCaltech: Drew Miles

#SoCaltech: Avi Leibovici

#SoCaltech: Avi Leibovici

#SoCaltech: Brendan Bubion

#SoCaltech: Brendan Bubion

#SoCaltech: Jamie Tijerina

#SoCaltech: Jamie Tijerina

#SoCaltech: Elina Sendonaris

#SoCaltech: Elina Sendonaris

#SoCaltech: Andy Ingersoll

#SoCaltech: Andy Ingersoll

#SoCaltech: David Delgadillo

#SoCaltech: David Delgadillo

#SoCaltech: Maria Jose Sanchez Rincon

#SoCaltech: Maria Jose Sanchez Rincon

#SoCaltech: Veronika Voss

#SoCaltech: Veronika Voss

#SoCaltech: Randolph Douge

#SoCaltech: Randolph Douge

#SoCaltech: Matheus de Castro Fonseca

#SoCaltech: Matheus de Castro Fonseca

#SoCaltech: Allison Howes

#SoCaltech: Allison Howes

#SoCaltech: Betsy Mitchell

#SoCaltech: Betsy Mitchell

#SoCaltech: Simon Hu

#SoCaltech: Simon Hu

#SoCaltech: Meet Caltech’s 2024 Graduates

#SoCaltech: Meet Caltech’s 2024 Graduates

#SoCaltech: Les Deutsch

#SoCaltech: Les Deutsch

#SoCaltech: Krista Dong

#SoCaltech: Krista Dong

#SoCaltech: Ian Brunton

#SoCaltech: Ian Brunton

#SoCaltech: George Ore

#SoCaltech: George Ore

#SoCaltech: Justin Hong

#SoCaltech: Justin Hong

#SoCaltech: Aidyl Gonzalez-Serricchio

#SoCaltech: Aidyl Gonzalez-Serricchio

#SoCaltech: Hannah Dion-Kirschner

#SoCaltech: Hannah Dion-Kirschner

#SoCaltech: Bethany Ehlmann

#SoCaltech: Bethany Ehlmann

#SoCaltech: Melissa Ramirez

#SoCaltech: Melissa Ramirez

#SoCaltech: Adolfo Carvalho

#SoCaltech: Adolfo Carvalho

#SoCaltech: Vincent Lopez

#SoCaltech: Vincent Lopez

#SoCaltech: Sean P. Devey

#SoCaltech: Sean P. Devey

#SoCaltech: Skyler Ware

#SoCaltech: Skyler Ware

#SoCaltech: Richard Andersen

#SoCaltech: Richard Andersen

MORE STORIES

Origami Master Robert Lang (BS ’82, PhD ’86) Lost His Collection in the Eaton Fire

Origami Master Robert Lang (BS ’82, PhD ’86) Lost His Collection in the Eaton Fire

Fred Shair (1937–2025)

Fred Shair (1937–2025)

Jenijoy La Belle (1943–2025)

Jenijoy La Belle (1943–2025)

LIGO Operator Presented with Blackfoot Headdress

LIGO Operator Presented with Blackfoot Headdress

Inside Look: A Chemistry Renaissance Blossoms in the Office of Lecturer Kayane Dingilian (BS ’16)

Inside Look: A Chemistry Renaissance Blossoms in the Office of Lecturer Kayane Dingilian (BS ’16)

The Magnificence of Jupiter, Captured by Juno

The Magnificence of Jupiter, Captured by Juno

What I Learned About Earth After a Year on "Mars"

What I Learned About Earth After a Year on "Mars"

What Data-Driven Science Reveals About the Twisted Saga of Western Water Rights

What Data-Driven Science Reveals About the Twisted Saga of Western Water Rights

Crossing Over: Where Art and Science Meet

Crossing Over: Where Art and Science Meet

A Chemistry Connection

A Chemistry Connection

A Feline Predator in Arms Lab

A Feline Predator in Arms Lab

Endnotes: What Does the Caltech Honor Code Mean to You?

Endnotes: What Does the Caltech Honor Code Mean to You?

When Only a Clunky Old Laser Will Do

When Only a Clunky Old Laser Will Do

Farewell, Dear Ingenuity

Farewell, Dear Ingenuity

Stephen R. Onderdonk (1944–2024)

Stephen R. Onderdonk (1944–2024)

What's Inside the Fall 2024 Issue of Caltech Magazine

What's Inside the Fall 2024 Issue of Caltech Magazine

William Bridges (1934–2024)

William Bridges (1934–2024)

The Driving Force of Uncertainty: A Conversation with Chemist Rudy Marcus

The Driving Force of Uncertainty: A Conversation with Chemist Rudy Marcus

Inside Look: MacArthur Fellow Joe Parker’s Insect-Themed Office

Inside Look: MacArthur Fellow Joe Parker’s Insect-Themed Office

Jeff Kimble (1949-2024)

Jeff Kimble (1949-2024)

Deep DIVE: A New Summer Program Helps Veterans Find Their Path in STEM

Deep DIVE: A New Summer Program Helps Veterans Find Their Path in STEM

Mike Wong (PhD ’18) Explains the Real Science of the “3 Body Problem”

Mike Wong (PhD ’18) Explains the Real Science of the “3 Body Problem”

Why Einstein First Visited Caltech

Why Einstein First Visited Caltech

Virginia V. Weldon (1935–2024)

Virginia V. Weldon (1935–2024)

Fred C. Anson (BS '54) (1933–2024)

Fred C. Anson (BS '54) (1933–2024)

Edward C. Stone (1936-2024)

Edward C. Stone (1936-2024)

PST ART, Where Art & Science Collide

PST ART, Where Art & Science Collide

Three Questions for Reza Sadri, Director of the AI Bootcamp

Three Questions for Reza Sadri, Director of the AI Bootcamp

The Brinson Exploration Hub Is a New Paradigm for Discovery

The Brinson Exploration Hub Is a New Paradigm for Discovery

What's the Coolest Thing in Your Office?

What's the Coolest Thing in Your Office?

FROM CALTECH.EDU

Caltech Professor Emeritus John Hopfield Wins Nobel Prize in Physics

Caltech Professor Emeritus John Hopfield Wins Nobel Prize in Physics

Caltech Mourns the Passing of Trustee Camilla Chandler Frost (1925–2024)

Caltech Mourns the Passing of Trustee Camilla Chandler Frost (1925–2024)

A New Type of Seismic Sensor to Detect Moonquakes

A New Type of Seismic Sensor to Detect Moonquakes

Building Bionic Jellyfish for Ocean Exploration

Building Bionic Jellyfish for Ocean Exploration

New Caltech-led Mission Will Study Ultraviolet Sky, Stars, Stellar Explosions

New Caltech-led Mission Will Study Ultraviolet Sky, Stars, Stellar Explosions