Happy New Year!

At times like this, I sometimes wonder what the Earth and Sun would say to each other if they could talk. They would watch us celebrating this annual moment at such an arbitrary time…

Sun: I could understand a party at either solstice…

Earth: Yes, or one at either equinox. Would make good sense…

Sun. Quite. But to pick a day about a week after one solstice…

Earth: Very strange.

Sun. Yes. They are a very strange lot.

In this picture of a beech tree in Wiltshire, we can see both moss and lichens thriving in the moist air close to the ground. Water evaporates constantly from the ground and moisture-loving organisms, including mosses, lichens and algae, will be found close to the ground regardless of aspect.

Direction can be found by looking for clues above this area or sometimes by getting to know the lichens in this low band itself. It is much more complex, and fun, detective work than simply thinking ‘green is north’.

On a different note, my book has just come out in the US!

In the book I emphasise the importance of using our senses in natural navigation. I cover examples from the sound of birdsong to the smell of trampled fruit in London.

I stumbled across a kindred spirit on the Internet this morning in Sachin Somanna, the author of this article about Gayathri Tiffin Room. It certainly smells from here like one of the joys of the Indian city of Mysore:

“We do not need any directions to reach Gayathri Tiffin Room (or GTR as it is popularly known) because once we close in on Chamundipuram circle, the irresistible aroma of a Mysore Masala Dosa works like a natural navigator to this vegetarian restaurant that is located just a few meters from the circle.  Although the restaurant looks rather plain on the outside, the packed crowd inside negates this observation. GTR is filled with foodies digging into some varying and rather tempting South-Indian cuisine.”

The land’s wind shadow can be seen in the smooth water nearest the foreground of this picture of Nutbourne Marshes. This is an effect sailors, particularly dinghy sailors, will be very familiar with. It is the same effect that causes a build up of ice, sand and dust deposits on the lee side of obstacles on land. It is not usually quite as simple as the object getting in the way of the wind though, because of something called Bernoulli’s Law.

It is one of those laws that features a lot in our lives, but gets little credit. It helps chimneys to work properly and aircraft to fly. It causes the wind to accelerate as it travels over a curved surface and then decelerate as it reaches the other side. It probably deserves more credit as it is this effect that allows boats to sail into wind, a completely different physical process from downwind sailing where the boat is pushed along by the wind.

… however, this is a risky business, so here are two jalapeno chillies. One lived its life in a south-facing greenhouse, the other lived near it, outside near a south-facing wall. They both received identical amounts of sunlight. They both grew in the same soil and received plenty of water. The only serious differences to their environments were the temperature and wind exposure.

It is not too hard to see that nature is quite fussy about its environment and it is this fussiness that can give us a helping hand. It is sometimes possible to deduce useful things about the elements from two examples of the same species. One big example of this can sometimes be found in the different look and feel of two sides of the same hill or mountain.