Tree of 40 Fruits

I’m sure we’ve all seen a tree or two at some point in our lives, sometimes carrying fruit, but never a single tree with branches full of 40 different varieties of fruit.

This truly innovating project was actually led not by a scientist, but by an artist. His name is Sam Van Aken, and he is an art professor at Syracuse University in New York who some years ago planned to create a tree where each branch produced a different fruit, so that in spring, every branch would bloom into a different colour, but all in shades of pink, white and red.

tree 40 fruit

A CGI image of what the tree will look like in spring

To accomplish this gardening feat, he used a technique called chip grafting. It consists of cutting a fragment of a flowering tree that gives one type fruit (including the bud), and adding that onto a previously-made cut on the ‘master tree’ (the original tree that will hold all the different fruits). Then, it is held together with tape and left during the winter so the two parts join.

And so step by step, the tree became larger, and every year it had the ability to produce more and more fruits until, after 9 years, it could make up to 40 types. This project has been carried out for quite some time, so now, in total, there are 16 of these hybrid trees, each with a different combination of fruits. However, they all produce variations of stone fruits, like apricots, cherries, plums and peaches because they are easily compatible. To find these trees, you should look all over the US, in museums and community centres, or if you’ve got enough money to spend on this, you can even buy your own for around $30,000.

The idea originally was just to create beautiful trees as a work of art, but as Van Aken was collecting different varieties of fruits to add to his trees, he discovered a growing problem: a lower variety of species had become available, and only a few were being grown at an industrial scale. The less-common varieties were not being used because they were not as good for selling: the colour may not be as appealing, the size may be too small or too large, or the may last very little time on the shelf. This meant that some of the native, antique species were being lost, which worried the artist and made him change the focus of the project onto conservation. So now, not only do his trees carry some of these rarer species so they are still around, but he’s also spending the money he earns from the ‘Trees of 40 Fruits’ into creating an orchard collecting all the different varieties of stone fruit, especially the uncommon ones, so they are still go and people can even go and have a taste!

Meeting Pluto (The Planet)

NASA made history this week, once again, when the project New Horizons, launched 9 years ago, reached the ‘ex-planet’ Pluto and its surrounding moons. Ever since it has arrived, it’s been sending us information from there, and putting it lightly, it has been a rollercoaster of emotions.

Scientists previously believed Pluto to be a calm, inactive dwarf planet; just a mass of ice and frozen gases floating around the Solar System. But defying all these expectations, Pluto seems to be very geologically active, actually similar to Earth, (or rather, one of Neptune’s moons, since it has a large ice mantle).

The clues that point to this surprising conclusion are many. For one, there are areas with no signs of craters caused by asteroid collisions, which would be impossible unless these sections are relatively new, as they would be if they had been formed recently by geological activity. There are also fault lines and rift valleys, both characteristic features of tectonic movement.

However, scientists are still puzzled as to how these movements are brought about. In Earth, tectonic movements happen because of the melted rock in the core of the planet, but this is not possible in Pluto, so a popular theory suggests that since it is filled with radioactive material (like most astronomical bodies), this somehow produces enough energy to heat up the surface of Pluto and causes the movement of large amounts of ice that act as tectonic plates.

But don’t think this trend of unexpectedness stops at Pluto. Its largest moon, Charon, is not far behind. It also displays signs of being geologically active, as it has deep canyons and very smooth expanses.


Pluto sure is a sweetheart

Since many new areas in Pluto and Charon have been true wonders, scientists have decided to give them appropriate names. The most famous one, unofficially nicknamed ‘The Heart’ because it is heart-shaped, is now probably going to be known as Tombaugh Regio in honour of Clyde Tombaugh, the discoverer of Pluto in 1930. Another feature is a plane made of ice, which shows troughs at regular intervals, and has been dubbed the Sputnik Planum, in honour of the first spaceship. The Norgay Mountains are named after the first Sherpa to climb Mount Everest, and are a range of 3300 meter-high mountains made entirely of frozen ice which behaves like rocks. Astronomers also seem to be huge fans of the Lord of the Rings trilogy, as they have named a feature in Pluto ‘Balrog’, a monster from this series, and a dark region in the pole of Charon is being called Mordor.

The mission also offered an opportunity to accurately measure Pluto’s diameter for the first time. The results show that it is 2.370 km large, possibly the largest of the five recognized dwarf planets in the Solar System.

Although the official flyby has ended, New Horizons’ adventures are not over. All this baffling information it has sent us only represents about 2% of all the data it has collected, so we can still expect many surprises from this mission for about 16 months as the rest comes in. And after the visit to Pluto, it is going to fly to the Kuiper Belt, a zone beyond the planets full of small icy bodies that may contain some interesting information as to how the Solar System was formed.

Super Brain Network

Although it may seem directly taken from a science fiction movie, scientists at Duke University have actually managed to connect the brains of several organisms so that without any real communication they have been able to work together to carry out tasks.

In a series of experiments, researchers opened the skull of both monkeys and rats and using electrodes and wires, linked members of the same species together so that, even if they could not share complex thoughts or emotions, they could synchronise their neural activity.

When doing some experiments on rats, the connection was investigated by having one of the animals undergo an electrical stimulus, so its brain activity increased. The other rats, despite not being stimulated directly, automatically changed their neural activity to match that of the first rat, so it looked like they too had received the stimulus, and felt its effects.

But not only does this connection make them more ‘empathic’, it also makes them more intelligent. When scientists sent temperature and atmospheric pressure information into their brains, coded by electrical impulses, the rats could put all the information they had received together and solve problems regarding the chance of rainfall. They could do this by themselves, without any linking, but the brain network helped them obtain better scores.


Linking brains is no longer a science fiction movie plot

With monkeys, three of them were connected through the motor region of their brains, after being trained individually to control a virtual arm with thoughts alone. Once they were connected, each was able to control only certain aspects of the arm’s movement, like only being able to move the arm horizontally and vertically, and even those abilities it had to share with another monkey, so that each had an equal contribution to the movement in that direction. However, as messy as this sounds, they synchronised and managed to work with each together, combining their skills to control the arm and grab an imaginary ball displayed on the computer.

The applications for this are not to make a huge human population brain network, where we can share our thoughts and emotions, as not only are they too complex for it to be possible to share them this way, but it would also be unethical and have privacy issues. However, it can be used in people who have had some damage to their brain. For example, someone who has suffered from a stroke and can no longer talk normally can be connected to a healthy person, so said area synchronises with the healthy area and accelerates the healing process.

Cystic Hallelujah

Cystic Fibrosis is an inherited genetic condition, where specialised cells called epithelial cells, found in the lining of vessels (like the lungs, the intestines, the reproductive ducts…) do not function correctly. Normally, they would produce mucus, a slimy substance that reduces friction and allows substances to pass through the tracts more easily, but when suffering from Cystic Fibrosis, the mucus becomes less runny, so it is not as efficient at lubricating.

The most common treatment is physiotherapy, where an expert massages the chest area to help move the mucus along. This is an important area to do so, since if the mucus in the lungs gets stuck, it could house bacterial infections and cause trouble breathing. But as much as this may help, it still doesn’t cure CF, so infected people may still die quite young (around 40 years old).

A possible solution which has been considered for over a quarter of a century, since the single gene responsible for causing CF had been identified, has been gene therapy. This technique consists of introducing a healthy version of the gene into the cells of an infected person, and using it to replace the mutated version. However, there are several complications involved, and it has never been fully possible to carry this out and obtain good results. But not anymore.


A liposome is a phospholipid bilayer, which can fuse with cell membranes and release the gene it contains

In a new study carried out on 116 infected people, half received a gene therapy treatment, and half received a placebo. The treatment was a solution of liposomes that carried the desired gene inside them, and which the participants had to inhale so it could easily reach the lung cells. Although both were administered for 9 months, their effects were measured until after 12 months, and to do so researchers in charge measured the volume of air participants would breathe in and out in a set period of time. The results didn’t disappoint. People treated with gene therapy not only saw a stabilisation in their lung performance, instead of the disease’s characteristic downfall, but also had 3.7% better breathing capability than those people who had been given a placebo.

Although it may not sound like an impressive feat, it certainly is. Consider this is only the first time this has ever actually worked, and that it was a scaled down version of the treatment. The dose could definitely be increased so the effects are much greater. And even if the change seems small, it could postpone the need for lung transplants for decades.