Science & technology | Culture shock

A sophisticated civilisation once flourished in the Amazon basin

How the Casarabe died out remains a mystery

Drainage canals (linear features that drain into a small meandering river) seen from above.
Hidden in plain sightPhotograph: Umberto Lombardo

In northern Bolivia, on the edge of the Amazon rainforest, lies a savannah called the Llanos de Moxos. This is the stamping-ground of Umberto Lombardo, of the Autonomous University of Barcelona. Archaeologists once thought the Amazon basin’s soil would have been too poor to have sustained a large human population before Europeans arrived. Dr Lombardo is head of a team proving them wrong.

Explore more

This article appeared in the Science & technology section of the print edition under the headline “Culture shock”

From the February 1st 2025 edition

Discover stories from this section and more in the list of contents

Explore the edition

More from Science & technology

A silhouette view of the peloton

Why carbon monoxide could appeal to the discerning doper

Professional cycling is debating whether to ban the poisonous gas

Three rotated avocados made from small numbers

Heritable Agriculture, a Google spinout, is bringing AI to crop breeding

By reducing the cost of breeding, the firm hopes to improve yields and other properties for an array of important crops


Boom Supersonic makes aviation history as XB-1 breaks the sound barrier.

Could supersonic air travel make a comeback?

Boom Supersonic’s demonstrator jet exceeds Mach 1


Should you worry about microplastics?

Little is known about the effects on humans—but limiting exposure to them seems prudent

Wasps stole genes from viruses

That probably assisted their evolutionary diversification

America’s departure from the WHO would harm everyone

Whether it is a negotiating ploy remains to be seen