B2 · Feature
Separating evidence, expert claims, and unresolved questions
Read for meaning first. Then return to the text for vocabulary, language choices, and evidence.
Before you read
Build the context out loud.
- Where do people in your city wait outside in hot or cold weather?
- Who should decide where a city plants trees or builds new public spaces?
- What kind of evidence would convince you that a city project is working?
First pass: keep moving when one word is unfamiliar. Dotted words open optional help; every word also appears in the vocabulary bank below.
At 3 p.m. on a July afternoon, the bus stop on Delgado Avenue in Redmesa is not a pleasant place to wait. There is a bench, a timetable, and a thin metal roof, but there is no tree within two blocks. Last summer, the surface of the sidewalk beside the stop was measured at 142 degrees Fahrenheit. Six blocks north, under a line of mature oak trees, the same reading was 98 degrees.
The difference was recorded by a team from Redmesa State University, which spent two summers mapping temperatures at more than 300 bus stops across the city. Their findings have been used to shape an unusual public works project: a plan to treat shade as basic infrastructureThe basic systems and structures a city needs to function, such as roads, pipes, and power lines.Useful chunks: public infrastructure · invest in infrastructure, like water pipes or streetlights.
“We tend to think of trees as decoration,” said Dr. Lena Okafor, the climate scientist who led the study. “Our data suggest that, in a hot city, they behave more like a public service. When shade is missing, people’s health, their transportation choices, and even their electricity bills are affected.”
It is widely accepted that cities are warmer than the countryside around them, an effect known as the urban heat island. Asphalt and concrete absorb heat during the day and release it slowly at night, so neighborhoods with little vegetationPlants in general, especially the plants growing in a particular area.Useful chunks: little vegetation · dense vegetation may not cool down even after sunset. Trees are believed to reduce this effect in two ways: they block direct sunlight, and they release water vapor through their leaves, which cools the surrounding air.
The Redmesa study added a less comfortable finding. Tree cover was not evenly distributedShared or spread across an area or among people in a particular way.Useful chunks: evenly distributed · unequally distributed. In the city’s wealthier districts, around a third of the street area was shaded at midday. In several older neighborhoods on the south side, the figure was below eight percent. Those are also the areas where fewer households own cars, so more residents walk to bus stops in the hottest part of the day.
“Nobody planned it that way,” said Marcus Bell, the city’s urban forester. “But decisions made sixty years ago about where to build highways and which streets got maintenance budgets are still visible in the canopyThe layer of branches and leaves that trees form above the ground.Useful chunks: tree canopy · under the canopy today.”
Under the new plan, 4,000 trees are to be planted over five years, starting with the streets where heat exposure was found to be highest. Shade structures are also being installed at 40 bus stops while the young trees grow.
Not everyone is convinced the approach will work as quickly as promised. A newly planted tree may need fifteen years to provide meaningful shade, and in a dry climate every one of them has to be watered. Water use has been described by some council members as the project’s weakest point. Bell acknowledges the concern. The city has chosen drought-tolerantAble to survive long periods with very little rain.Useful chunks: drought-tolerant species · drought-tolerant plants species, he said, and many of the trees will be irrigatedSupplied with water through pipes or channels rather than by rain.Useful chunks: irrigated with recycled water · irrigation system with recycled water.
Okafor is also careful not to overstateTo describe something as larger, stronger, or more certain than it really is.Useful chunks: overstate the evidence · overstate the risk the evidence. “We can show that shaded stops are dramatically cooler. What we can’t yet prove is how much that changes health outcomesThe results or effects of a process, especially results that can be measured.Useful chunks: health outcomes · long-term outcomes across a whole population. That will take years of data.”
For people waiting on Delgado Avenue, the debate feels less abstract. Rosa Medina takes the 14 bus to work every morning and returns at the hottest time of the day. She has been asked about the plan by several reporters, and her answer rarely changes.
“They told us trees are coming,” she said. “I’ll believe it when I can stand under one.”
Original text written for Thomas’s Classroom Reading Lab.
Words in context
Useful vocabulary and chunks
Learn the word with the partners it naturally keeps.
infrastructure
The basic systems and structures a city needs to function, such as roads, pipes, and power lines.
public infrastructure · invest in infrastructurevegetation
Plants in general, especially the plants growing in a particular area.
little vegetation · dense vegetationdistributed
Shared or spread across an area or among people in a particular way.
evenly distributed · unequally distributedcanopy
The layer of branches and leaves that trees form above the ground.
tree canopy · under the canopydrought-tolerant
Able to survive long periods with very little rain.
drought-tolerant species · drought-tolerant plantsirrigated
Supplied with water through pipes or channels rather than by rain.
irrigated with recycled water · irrigation systemoverstate
To describe something as larger, stronger, or more certain than it really is.
overstate the evidence · overstate the riskoutcomes
The results or effects of a process, especially results that can be measured.
health outcomes · long-term outcomesCheck your reading
Comprehension check
Choose the answer best supported by the text. Check your choices when you finish the whole set.
01What is the main idea behind Redmesa’s new plan?
02Why does the lack of shade on the south side matter especially?
03According to Marcus Bell, why is tree cover uneven across the city?
04Which weakness of the plan has some council members worried?
05What does Dr. Okafor say her study cannot yet show?
06What does Rosa Medina’s final comment suggest?
Language in the text
Report findings with the right degree of certainty
A science feature must show what was measured, what experts believe, and what is still uncertain. Passive reporting structures foreground the finding or the belief, while hedges such as suggest, may, and tend to stop the writer from claiming more than the evidence shows.
The passive puts the measurement first and adds the researchers with by.
Be believed to presents a widely held scientific view without naming one source.
Was found to be reports a result of the study rather than an opinion.
Suggest is a cautious reporting verb: the data point toward a conclusion but do not prove it.
The present perfect passive reports a criticism and still keeps its source visible.
May hedges the estimate, because the exact time depends on species and conditions.
Check your reading
Language focus check
Use the surrounding meaning, not only the shape of one sentence.
01Which sentence correctly reports a general belief without naming who holds it?
02Which sentence is appropriately cautious about the evidence?
03Which sentence keeps the source of the criticism visible?
Read like a writer
How a science feature earns the reader’s trust
The writer moves from one hot bus stop to citywide data, lets experts explain the findings, gives space to doubts, and returns to a single resident so the issue stays human.
Measured scene
A precise number in a familiar place makes the problem concrete before any theory is introduced.
Last summer, the surface of the sidewalk beside the stop was measured at 142 degrees Fahrenheit.
Expert framing
The scientist’s quotation challenges a common assumption and sets up the feature’s central idea.
We tend to think of trees as decoration
Fair doubt
Including objections and the scientist’s own limits makes the reporting more credible, not weaker.
Not everyone is convinced the approach will work as quickly as promised.
Human ending
The final voice moves from data back to daily life and leaves the reader with a fair test for the plan.
I’ll believe it when I can stand under one.
From reading to speaking
Build your response
Work through the stages in order. Answer before opening the model.
01GistWhat is Redmesa trying to do, and why?
Useful ways to begin
Compare with a model response
Redmesa plans to plant thousands of street trees, starting where heat exposure is highest, because a university study found large temperature differences between shaded and unshaded bus stops.
02Main pointsWhat did the study find, what are the plan’s weaknesses, and what remains uncertain?
Useful ways to begin
Compare with a model response
The study found that shade was unevenly distributed and that exposed stops were much hotter. Critics point out that trees need water and take years to grow. What is still unclear is how much shade improves health across the population.
03AnalyzeWhy does the writer include Okafor’s statement about what she cannot prove?
Useful ways to begin
Compare with a model response
This statement shows that the scientist separates evidence from hope. It makes the feature more trustworthy, because readers can see exactly how far the data go.
04ReactWould a plan like this be a good use of public money where you live?
Useful ways to begin
Compare with a model response
In my city, it would make sense on the main bus routes. The strongest argument for it is that the people who wait outside longest benefit first. One condition I would add is a public report on tree survival every year.
Speak
Take a position
Explain the Redmesa plan to someone who has not read the feature. Report one finding with a passive structure, one expert view with a reporting verb, and one limitation with a hedge.
Write
Make the reading useful
Write a 200-word news brief about an imaginary city project. Include two passive reporting structures, one quoted expert, and one sentence that says what is not yet known.