Earth & Life Sciences

Animal evolution: a new view of an old tree

By Peter Holland
The metaphor of the ‘evolutionary tree’ is powerful. Closely related species, such as octopus and squid, can be pictured as twigs sitting near each other on a small branch, in turn connected to larger and larger branches, each representing more distant evolutionary relationships. Every animal species, past and present, is a twig somewhere on the vast tree of life. But what is the shape of this metaphorical tree? Can we find the correct place for all the twigs, or perhaps even just the largest branches? In short, who is related to whom? To solve this would be to reconstruct the history of animal life on our planet.

Romanticism: a legacy

By Michael Ferber
The Very Short Introductions are indeed very short, so I had to cut a chapter out of my volume that would have discussed the aftermath or legacy of Romanticism today, two hundred years after Romanticism’s days of glory. In that chapter I would have pointed out the obvious fact that those who still love poetry look at the Romantic era as poetry’s high point in every European country. Think of Wordsworth, Keats, Shelley, Pushkin, Mickiewicz, Leopardi, Lamartine, Hugo, and Nerval. Those who still love “classical” music fill the concert halls to listen to Beethoven, Schumann, Chopin, Berlioz, and Wagner; and those who still love traditional painting flock to look at Constable, Turner, Friedrich, and Delacroix. These poets and artists are still “alive”: their works are central to the culture from which millions of people still draw nourishment. I can scarcely imagine how miserable I would feel if I knew I could never again listen to Beethoven or read a poem by Keats.

Can the shape of someone’s face tell you how healthy they are?

By Anthony J Lee
You can tell a lot about someone from their face, from simple demographic information such as sex and ethnicity, to the emotions they’re feeling based on facial expressions. But what about their health? Can the shape of someone’s face tell you how likely this person is to catch the common cold?

A deep-sea microorganism and the origin of eukaryotes

By Masashi Yamaguchi and Cedric Worman
There are only two kinds of organisms on Earth: prokaryotes and eukaryotes. Prokaryotes include the Bacteria and Archaea and consist of structurally simple cells that are generally a few micrometers (1 µm= 1/1,000 mm) in size and lack a nucleus. Eukaryotes include animals, plants, fungi, etc. and consist of structurally complex cells that are nearly 10,000 times the volume of prokaryotic cells and have a nucleus enclosed by a double membrane in addition to various organelles such as mitochondria and chloroplasts.

Mars: A geologist’s perspective

By David Rothery
So Mars is ‘Place of the Year’! It has the biggest volcano in the Solar System — Olympus Mons — amazing dust storms, and the grandest canyon of all — Valles Marineris. Mind you, the surface area of Mars is almost the same as the total area of dry land on Earth, so to declare Mars as a whole to be ‘place of the year’ seems a little vague, given that previous winners (on Earth) have been islands or single countries.

The Brain Supremacy

By Kathleen Taylor
Ours is a world full of science. Much of that technology and knowledge, from mobile phones to the understanding of gravity, currently comes from what we call ‘the natural sciences’: those which study the material universe. In school, we learn to distinguish physics, chemistry, geology, and their natural kin from life sciences like biology and psychology. Our ideas of what science is, and indeed what we are, have been shaped accordingly. The brain supremacy, that coming era in which neuroscience will challenge physics for cultural dominance, is about to reshape those ideas as never before.

On animals and tools

By Robert St. Amant

Try this experiment: Ask someone to name three tools, without thinking hard about it. This is a parlor game, not a scientific study, so your results may vary, but I’ve done this dozens of times and heard surprisingly consistent answers. The most common is hammer, screwdriver, and saw, in that order.

Marian Stamp Dawkins on why animals matter

There is an urgent argument for the need to rethink animal welfare, untinged by anthropomorphism and claims of animal consciousness, which lack firm empirical evidence and are often freighted with controversy and high emotions. With growing concern over such issues as climate change and food shortages, how we treat those animals on which we depend for survival needs to be put squarely on the public agenda. Marian Stamp Dawkins seeks to do this by offering a more complete understanding of how animals help us.

Art and human evolution

By Stephen Davies
Young children take to painting, singing, dancing, storytelling, and role-playing with scarcely any explicit training. They delight in these proto-art behaviors. Grown-ups are no less avid in extending such behaviors, either as spectators or participants. Provided we have a generous view of art, we all engage routinely and often passionately with it.

Giant pumpkins

By Cindy Ott

By Cindy Ott
At this year’s Topsfield Fair in Massachusetts, Ron Wallace broke the world record for the biggest pumpkin yet with a specimen weighing in at 2009 pounds. Photographs of Wallace next to this colossal body of orange flesh made headlines not only in the regional Boston Globe but also the nationwide Huffington Post. Yet every year in the popular press scenes of a pickup truck with its bed filled to the brim or a grown adult comfortably nestled inside a single giant pumpkin document the variety’s comically huge size.

Should fishing communities play a greater role in managing fisheries?

By Robert Deacon
Marine fisheries around the world are in a state of decline. Each decade the U.N. Food and Agriculture Organization reports that a larger fraction of the world’s fisheries are overexploited or depleted. Historical trends in individual fisheries have led some scientists to predict all major fisheries will be collapsed by mid-century. The economic status of these resources is even more dismal.

The “Choice” Bazaar

Daniel Callahan
Some years ago I wrote a book on abortion that espoused women’s legal right to choose abortion, which was later cited in Roe v. Wade. It should have made me popular with feminists, but it did not and for one reason: I also argued that abortion is an ethical choice, and that not all abortions would necessarily be good choices. Trained as a philosopher, I pointed out that a traditional part of morality is deciding how to make good choices in the shaping of one’s life.

Nucleic Acids Research and Open Access

By Richard Roberts
In 2004, when the internet was pervading every aspect of science, the Executive Editors of Nucleic Acids Research (NAR) made the momentous decision to convert the journal from a traditional subscription based journal to one in which the content was freely available to everyone, with the costs of publication paid by the authors. There was great trepidation, by the editors and Oxford University Press, that authors would refuse to do this and instead would choose to publish elsewhere.

The myth of a constant and stable environment

By Daniel B. Botkin
Nature has always changed; even the moon’s rotation around Earth and distance from Earth have changed over the millions of years. Living things require, and depend upon, change in nature in order to survive. We have learned this from science, from geological history recorded in ancient nautilus shells to understanding radioactivity.

Here’s to a wet New Orleans

By Christopher Morris
In the aftermath of Hurricane Isaac, Jack Payne of Delacroix, which is a tiny fishing village in the wetlands of the Mississippi delta below New Orleans, explained to Bob Marshall of the Times-Picayune, that “Everything I rebuild will either be on pilings or wheels. It’s gotta be higher than storm surge, or something I can pull outta here. This is our future, man. We know it’s gonna happen again and again — and just get worse.”

How the social brain creates identity

Who we are is a story of our self–a narrative that our brain creates. Like the science fiction movie, we are living in a matrix that is our mind. But though the self is an illusion, it is an illusion we must continue to embrace to live happily in human society. In The Self Illusion, Bruce Hood reveals how the self emerges during childhood and how the architecture of the developing brain enables us to become social animals dependent on each other.