Misc
Visualized: The Many Shapes of Bacteria
Invisible Diversity: The Many Shapes of Bacteria
Bacteria are amazing.
They were the first form of life to appear on Earth almost 3.8 billion years ago.
They make up the second most abundant lifeform, only outweighed by plants.
And most interesting of all: they exist in practically every environment on our planet, including areas where no other lifeforms can survive. As a result, bacteria exhibit a wide variety of appearances, behaviors, and applications similar to the lifeforms we see in our everyday lives.
The incredible diversity of bacteria goes underappreciated simply because they are invisible to the naked eye. Here, we illustrate how researchers classify these creatures on the basis of appearance, giving you a glimpse into this microscopic world.
A Life of Culture
Though bacteria may look similar to other microorganisms like fungi or plankton, they are entirely unique on a microscopic and genetic level.
Bacteria make up one of the three main domains of life. All life shares its earliest ancestor with this group of microbes, alongside two other domains: the Archaea and the Eukarya.
Archaea are very similar to bacteria, but have different contents making up their cell walls.
Eukarya largely consists of complex, multicellular life, like fungi, plants, and animals. Bacteria are similar to its single-celled members because all bacteria are also unicellular. However, while all Eukarya have nuclear membranes that store genetic material, bacteria do not.
Bacteria have their genetic material free-floating within their cellular bodies. This impacts how their genes are encoded, how proteins are synthesized, and how they reproduce. For example, bacteria do not reproduce sexually. Instead, they reproduce on their own.
Bacteria undergo a process called binary fission, where any one cell divides into two identical cells, and so on. Fission occurs quickly. In minutes, populations can double rapidly, eventually forming a community of genetically identical microbes called a colony.
Colonies can be visible to the human eye and can take on a variety of different shapes, textures, sizes, colors, and behaviors. You might be familiar with some of these:
Superstars of a Tiny World
The following are some interesting bacterial species, some of which you may be familiar with:
Epulopiscium spp
This species is unusually large, ranging from 200-700 micrometers in length. They are also incredible picky, living only within the guts of sturgeon, a type of large fish.
Deinococcus radiodurans
D. radiodurans is a coccus-shaped species that can withstand 1,500 times the dose of radiation that a human can.
Escherichia coli
Despite being known famously for poisoning food and agriculture spaces from time to time, not all E.coli species are dangerous.
Desulforudis audaxviator
Down in the depths of a South African gold mine, this species thrives without oxygen, sunlight, or friends—it is the only living species in its ecosystem. It survives eating minerals in the surrounding rock.
Helicobacter pylori
Known for causing stomach ulcers, this spiral-shaped species has also been associated with many cancers that impact the lymphoid tissue.
Planococcus halocryophillus
Most living things cease to survive in cold temperatures, but P. halocryophillus thrives in permafrost in the High Arctic where temperatures can drop below -25°C/-12°F.
‘Bact’ to the Future
Despite their microscopic size, the contributions bacteria make to our daily lives are enormous. Researchers everyday are using them to study new environments, create new drug therapies, and even build new materials.
Scientists can profile the diversity of species living in a habitat by extracting DNA from an environmental sample. Known as metagenomics, this field of genetics commonly studies bacterial populations.
In oxygen-free habitats, bacteria continuously find alternative sources of energy. Some have even evolved to eat plastic or metal that have been discarded in the ocean.
The healthcare industry uses bacteria to help create antibiotics, vaccines, and other metabolic products. They also play a major role in a new line of self-building materials, which include “self-healing” concrete and “living bricks”.
Those are just a few of the many examples in which bacteria impact our daily lives. Although they are invisible, without them, our world would undoubtedly look like a much different place.
Education
Ranked: America’s Best Universities
Evaluated on 19 different metrics, here’s the list of America’s best universities, led by 14 private schools.

Ranked: America’s Best Universities
The latest ranking of America’s best universities is here, perfectly timed for the approaching admissions season.
“Best” is of course subjective, and U.S. News and World Report has compiled 19 metrics on which they evaluated more than 400 national universities. Some of them include:
- Graduation rates & performance: A four-year rolling average of the proportion of each entering class earning a bachelor’s degree in six years or less. Performance is measured against predictions made by the publishers, and when beaten, the university gains a higher scoring.
- Peer assessment: A two-year weighted average of ratings from top academics—presidents, provosts and deans of admissions—on academic quality of peer institutions with which they are familiar.
- Financial resources: The average per student spend on instruction, research, student services and related educational expenditures in the 2021 fiscal year.
- Debt: A school’s average accumulated federal loan debt among borrowers only.
- Pell graduation rates & performance: the same calculation as stated above, but focused only on Pell Grant students, adjusted to give more credit to schools with larger Pell student proportions.
The website’s methodology section details how they sourced their data, the weights assigned to each metric, and their changes over the years.
From the hundreds assessed come the nearly 50 best universities that offer a variety of undergraduate majors, post-graduate programs, emphasize research, or award professional practice doctorates.
Which are the Best Universities in America?
At the top of the list, Princeton University is the best university in the country, known for its physics, economics, and international relations departments. Notably, it’s a rare Ivy league university that does not have a law, medical, or business school.
Here’s the full ranking of America’s best universities, along with annual tuition requirements.
Rank | School Name | State | Tuition |
---|---|---|---|
1 | Princeton University | New Jersey | $59,710 |
2 | Massachusetts Institute of Technology | Massachusetts | $60,156 |
3 | Harvard University | Massachusetts | $59,076 |
3 | Stanford University | California | $62,484 |
5 | Yale University | Connecticut | $64,700 |
6 | University of Pennsylvania | Pennsylvania | $66,104 |
7 | California Institute of Technology | California | $63,255 |
7 | Duke University | North Carolina | $66,172 |
9 | Brown University | Rhode Island | $68,230 |
9 | Johns Hopkins University | Maryland | $63,340 |
9 | Northwestern University | Illinois | $65,997 |
12 | Columbia University | New York | $65,524 |
12 | Cornell University | New York | $66,014 |
12 | University of Chicago | Illinois | $65,619 |
15 | University of California, Berkeley | California | $48,465 (out-state) $15,891 (in-state) |
15 | University of California, LA | California | $46,326 (out-state) $13,752 (in-state) |
17 | Rice University | Texas | $58,128 |
18 | Dartmouth College | New Hampshire | $65,511 |
18 | Vanderbilt University | Tennessee | $63,946 |
20 | University of Notre Dame | Indiana | $62,693 |
21 | University of Michigan, Ann Arbor | Michigan | $57,273 (out-state) $17,786 (in-state) |
22 | Georgetown University | Washington, DC | $65,082 |
22 | University of North Carolina at Chapel Hill | North Carolina | $39,338 (out-state) $8,998 (in-state) |
24 | Carnegie Mellon University | Pennsylvania | $63,829 |
24 | Emory University | Georgia | $60,774 |
24 | University of Virginia | Virginia | $58,950 (out-state) $22,323 (in-state) |
24 | Washington University, St. Louis | Missouri | $62,982 |
28 | University of California, Davis | California | $46,043 (out-state) $15,266 (in-state) |
28 | University of California, San Diego | California | $48,630 (out-state) $16,056 (in-state) |
28 | University of Florida | Florida | $28,658 (out-state) $6,381 (in-state) |
28 | University of Southern California | California | $68,237 |
32 | University of Texas, Austin | Texas | $41,070 (out-state) $11,698 (in-state) |
33 | Georgia Institute of Technology | Georgia | $32,876 (out-state) $11,764 (in-state) |
33 | University of California, Irvine | California | $47,759 (out-state) $15,185 (in-state) |
35 | New York University | New York | $60,438 |
35 | University of California, Santa Barbara | California | $45,658 (out-state) $14,881 (in-state) |
35 | University of Illinois Urbana-Champaign | Illinois | $36,068 (out-state) $17,572 (in-state) |
35 | University of Wisconsin, Madison | Wisconsin | $40,603 (out-state) $11,205 (in-state) |
39 | Boston College | Massachusetts | $67,680 |
40 | Rutgers University, New Brunswick | New Jersey | $36,001 (out-state) $17,239 (in-state) |
40 | Tufts University | Massachusetts | $67,844 |
40 | University of Washington | Washington | $41,997 (out-state) $12,643 (in-state) |
43 | Boston University | Massachusetts | $65,168 |
43 | The Ohio State University | Ohio | $36,722 (out-state) $12,485 (in-state) |
43 | Purdue University, Main Campus | Indiana | $28,794 (out-state) $9,992 (in-state) |
46 | University of Maryland, College Park | Maryland | $40,306 (out-state) $11,505 (in-state) |
47 | Lehigh University | Pennsylvania | $62,180 |
47 | Texas A&M University | Texas | $40,607 (out-state) $12,413 (in-state) |
47 | University of Georgia | Georgia | $30,220 (out-state) $11,180 (in-state) |
47 | University of Rochester | New York | $64,384 |
47 | Virginia Tech | Virginia | $36,090 (out-state) $15,478 (in-state) |
47 | Wake Forest University | North Carolina | $64,758 |
53 | Case Western Reserve University | Ohio | $62,234 |
53 | Florida State University | Florida | $21,683 (out-state) $6,517 (in-state) |
53 | Northeastern University | Massachusetts | $63,141 |
53 | University of Minnesota, Twin Cities | Minnesota | $36,402 (out-state) $16,488 (in-state) |
53 | William & Mary | Virginia | $48,841 (out-state) $25,041 (in-state) |
MIT places second, and Harvard and Stanford tie for third. Yale rounds out the top five.
Private universities, including seven Ivy League colleges, dominate the top of the rankings. Meanwhile, the highest-ranked public schools are tied at 15th, both state schools in California.
For affordability, since the higher ranks are populated by private universities, there tends to be a broad correlation of better universities being more expensive. That said, the most expensive school in the top 50 ranks is actually the University of Southern California, tied at 28th, for $68,237/year.
As it happens, also tied at 28th, the University of Florida is the most affordable public school for in-state students ($6,381/year) and Florida State University tied at 53rd, is the most affordable for out-of-staters at $21,683/year.
However these costs are tuition-only, and don’t account for other necessary expenses: accommodation, food, and textbooks.
Best University versus Best “Fit”
Finding the best university for prospective students is more than just perusing a long ranking list.
Aside from the numerous schools present within each university—which can often be the best for specific majors—factors like location, proximity to family, campus culture, the non-academic pursuits (sports, extracurriculars, internships) are also taken into consideration.
In fact, research has found that just attaining a university degree improves future earnings potential and employability.
Furthermore, individual engagement at college (irrespective of the rank of the school in question) plays a far bigger role in learning and general well-being than simply attending a highly-ranked school.
However, for low income and minority students, attending a top-ranked school does improve future earnings considerably. For women, it also often results in delaying marriage and kids, which results in more work-hours and as a result, more pay.
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