It’s long been asserted that dolphins and whales are very intelligent. That’s because this group of aquatic mammals, cetaceans, have large brains and because some of their behaviours have been interpreted as displaying notable intelligence. Paul Manger unpacks new research that shows that the brains of cetaceans are indeed special – but for different reasons than previously suggested. His findings show that their brains have evolved to prevent losing heat in cold water. Understanding how this survival adaptation works opens the door to designing better conservation efforts in the wake of rising ocean temperatures as a result of climate change.

The world’s attention recently zeroed in on the Suez Canal, an artificial channel connecting the Mediterranean and Red seas across Egyptian territory. A massive container ship wedged across the canal, blocking all traffic and creating a huge and expensive backlog of trade vessels. The economic benefits of the canal are apparent. What’s been less explored are the technical mishaps and failed ambitions that dogged it in its early years. Lucia Carminati provides insights into the canal’s fascinating beginnings and what it took to cleave this huge waterway through the desert-like region.

Natasha Joseph

Freelance Commissioning Editor

A humpback whale near the Antarctic ice. Dr Olga Shpak

We discovered that whale and dolphin brains produce lots of heat. Why it matters

Paul Manger, University of the Witwatersrand

The cetacean brain has a specialised thermogenic system that helps the animal's brain to produce enough heat to maintain a functional brain temperature.

The procession of ships in the Suez canal for its opening. Illustration from the magazine “The Illustrated London News, volume LV, December 18, 1869. DEA / BIBLIOTECA AMBROSIANA/Getty Images

The toll and toil it took to cleave the Suez Canal through the Egyptian desert

Lucia Carminati, Texas Tech University

Prior to the mid-19th century, the Isthmus of Suez – the 125km strip of land that lies between the Mediterranean Sea and the Red Sea – was a quiet spot.

Business + Economy

Mentorship programmes in Kenya can make graduates more employable. Here’s how one works

Dr. Chao Mbogho, Kenya Methodist University

A lack of consistent mentorship models leads to a skills gap which affects the global competitiveness of Kenya's students and graduates.

How organisational culture affects business performance in Nigeria

Anthony Abiodun Eniola, PhD, Landmark University

SMEs must incorporate Total Quality Management practices in their organisational culture for better performance.

Politics

How insecurity affects the lives of everyone in the Niger Delta

Tarila Marclint Ebiede, KU Leuven

The insecurity that plagues Nigeria significantly undermines the quality of life for its people.

Former opposition leader Tony Leon pushes South Africa’s hot buttons in new book

Keith Gottschalk, University of the Western Cape

Leon mulls over the Democratic Alliance's biggest challenge: 'how to maintain its majority support among minorities, and increase its meagre voter share among the black majority'.

From our international editions

Why domestic abuse is such a difficult subject for churches

Ava Kanyeredzi, University of East London

A pilot project is training Black church leaders in how to better help domestic abuse victims in their congregations.

There’s a surprising ending to all the 2020 election conflicts over absentee ballot deadlines

Richard Pildes, New York University

The fight over absentee ballot deadlines in the November 2020 election was bitter and prolonged. Now, an election law scholar looks at how those ballots affected the presidential race.

En Français

La demande énergétique mondiale est sous-estimée, et c’est un vrai problème pour le climat

Victor Court, IFP Énergies nouvelles

En ne prenant pas assez en compte les mécanismes de l’effet rebond, les modèles climatiques et énergétiques surévaluent les économies d’énergie vraiment réalisables.

Quand l’archéologie enquête sur l’origine de la violence organisée

Anne Lehoërff, CY Cergy Paris Université

L’homme est-il naturellement porté à la violence ? Les spécialistes des époques les plus anciennes mènent l’enquête.

 

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