From the frozen highlands...

Here's the latest news from your intrepid solar explorers, beamed to you from the frozen highlands of northern Argentina. Indeed yes, it's seriously cold up here at 4,000m. Last night temperatures dropped to -16 degrees, and it's still -4 degrees at 10am in the morning, as I write this email to you from my freezing laptop in our unheated hotel room where I spent the night fully clothed with a hat and scarf beneath eight blankets.

So John and I arrived in Buenos Aires on Sunday lunchtime after 24 hours of travelling. Buenos Aires is a major city - 16 million inhabitants, which is nearly half of Argentina's population - and it feels like Paris or Madrid: big boulevards, big buildings, big shops. It felt kind of odd arriving in mid-winter.

John