The world population hits 7 billion today. Lead scientist Sanjayan has a message for the milestone baby, and it includes is plenty of both good and bad news. More

A colleague had to decide between giving their 10-year-old son a week at camp in Minnesota or an iPad. For Sanjayan the answer was easy, and surprising. More

At the final camp of the expedition Sanjayan reflects on the meaning of the journey and what lies ahead for this vast land and the people that call it home. More

Sanjayan found a kayaking legend who would teach him everything he needed to know before the expedition on the river. Well, he did leave out one minor detail. More

The buggy evening, without a spot of wind, was transformed near midnight into a gale. We had picked out campsite designed for the views and to catch the slightest breeze; we were unprepared for the hard rain. More

Overnight, a storm gathered in silence and quickly pounced. The hot windless evening of yesterday has been replaced by lashing rain and gale force winds. Our tents are anchored with heavy rocks, and yet we fear to leave them empty for too long lest they are tossed into the river. More

So far there are two constants in the campsites that have been selected, they are poor for fishing and great for bugs. But once they settle in, what is life like in one of the most remote spots in North America? More

The pale walls of my tent are smeared in many places as if a little kid with fingers covered in chocolate had played inside. The smears are blood. More

I write in the light of the endless Arctic dusk, filtered into a golden hue through the walls of my tent. Outside, I hear wolves howl across the river ... More

They had been out for two days when they sighted in the far distance a herd, and as the dogs surged forward in their excitement, Joseph lost his grip on the sled. When he tumbled on to the snow, his dad kept going ... More