BP agreed to pay the largest fine in US history as compensation for the worst environmental damage ever: the Deepwater Horizon oil spill.
If butterflies’ and dragonflies’ colours fade, blame global warming
According to a new study the colour of butterflies and dragonflies depends on climate. Global warming is changing the way they are distributed in favour of lighter-coloured ones.
Insects are the largest group of animals on earth. More than a million species were classified according to shape, colour and dimension but those data are incomplete and every year new species are discovered.
Many insects have an important role in preserving the environment but nobody ever imagined that they can help foresee the effects of climate change. According to a study conducted by the scientific journal Nature Communications, there is a connection between the colour of insects and their distribution, which is influenced by climate.
This piece of research, led by Dirk Zeuss of the University of Marburg, uses data of 473 insect species, including 366 European butterfly species and 107 dragonfly species and crosses those concerning the colour value of the body and wings with those concerning temperatures. The study shows that insect species with dark colouration live in cool climates, while light-coloured insects have advantages in regions with warm temperatures, exactly like human beings who would rather wear light coloured pieces of clothing in the summer because of hot temperatures.
Some insect species, such as butterflies and dragonflies, are cold-blooded creatures and in order to move, fly and eat, they have to absorb energy from the sun. For this reason, and in order to protect themselves from warming, the insects living in warmer areas are more likely to be light coloured.
Researchers also discovered a general shift towards lighter-coloured assemblages in the last two decades as a result of the gradual increase of temperatures. The distribution of dragonflies in the Old Continent has changed between 1988 and 2006 along with the increase of average annual temperatures. Dragonflies have also become lighter and the darker ones have moved to the Alps and the Balkans.
According to scientists there is a connection between the geographical distribution of these animals and climate change. «Global warming favours light-coloured insects in Europe – claim the authors of the study – while dark-coloured insects will shift their distribution and possibly retreat from certain areas and/or on a smaller scale will shift their habitat preference to more shady conditions».
Il Paese africano ha bruciato oltre una tonnellata di zanne e corni confiscati per esprimere la tolleranza zero per il bracconaggio.
The world’s richest man, Bill Gates, gives his advice on how to make money over the next years: invest in renewables. And he’s doing just that.
Grazie ad un progetto della Ong African Parks sette leoni sono stati reintrodotti nel Parco nazionale dell’Akagera, in Ruanda.
A causa del riscaldamento globale molti rettili il cui sesso è determinato dalla temperatura cui sono sottoposte le uova rischiano di estinguersi.
Una nuova ricerca ha dimostrato che il contatto con la natura inibisce la formazione di pensieri negativi che possono sfociare in gravi patologie come la depressione.
People are increasingly committing themselves to protect one of the Planet’s most important pollinators: bees. And in Norway they are creating a green corridor exactly for them.
Brazil and the United States have reached an agreement to tell the world that climate change is one of the crucial challenges of the century. And it has to be faced by joining hands.
In the country there are almost 1.5 million cubic metres of radioactive waste. Within the next 65 years there will be 4.3 million cubic metres of it.