Global sea level rise is one of the major environmental challenges of the 21st century. As lead scientist for multiple NASA JPL projects, Josh Willis and team are addressing this urgent problem from above and below.

Restoring heavily overstocked forests in the western U.S. to reduce wildfire severity has many co-benefits for water supply, hydropower, habitat, recreation, carbon storage, and more.

From the UNESCO sites at Luxor and Giza to the engineering marvel of Aswan High Dam, see the wonders of ancient and modern Egypt on this 10-day land and cruise excursion. An Egyptologist will be available to answer all your questions as you explore the sites together.

Join Andrea Ghez, PhD (MS '89, PhD '92), 2020 Nobel Laureate and 2012 Caltech Distinguished Alumni Award recipient, on this cruise t0 Chile and Argentina, featuring exclusive, private visits to some of the world’s most advanced observatories and telescopes.

Experience the raw beauty, wildlife, and unparalleled natural wonders on this exceptional adventure. See the grand cascades of Victoria Falls, follow in Mandela’s footsteps on Robben Island, and see untamed wilderness from aboard the elegant Rovos Rail. Experience South Africa, Botswana, and Zimbabwe on this remarkable luxury safari tour.

Immerse yourself in the world of jazz in Montmartre, cruise on the Seine, and experience the UNESCO World Heritage Site and tour the architectural and cultural institution – the Musée du quai Branly. Caltech Professor Jean-Laurent Rosenthal, PhD (PhD ’88) will join you on special tours highlighting the influence of African American expatriates on Parisian life and culture.

Tour medieval Germany, explore Bratislava and Budapest, and marvel at the incredible beauty of the Rhine Gorge and Wachau Valley while on an exclusively chartered first-class ship through three of Europe’s most prolific rivers and engineering wonders.