Read the latest articles from Popular Science (Page 901)

Algae bloom in Lake Erie, September 2017

Climate Change

A lake full of algae will wreck more than your summer swimming plans

Algae blooms in lakes and oceans generate pollution that harms people, pets, and the planet.

By Marlene Cimons

Science

Want to take a Mensa intelligence test? Here are four practice questions

The society is open only to people who score in the 98th percentile or higher on a preapproved intelligence test.

By Eleanor Cummins

Army

Can you pass the U.S. Army’s World War I-era intelligence test?

Literate recruits took the written Alpha test, while illiterate applicants took a visual Beta.

By Eleanor Cummins

Weapons

It’s not just Syria—chemical weapons still pose a global threat

What you need to know about chemical weapons.

By Eric Adams

Medicine

Homeopathic and natural remedies aren’t the same thing—and only one of them is total nonsense

Therapies from nature sometimes work, but diluted dog rabies does not.

By Sara Chodosh

Private Space Flight

How to become a space tourist: 8 companies (almost) ready to launch

How much are you willing to pay to become an astronaut?

By Stefanie Waldek

Climate Change

11 easy ways you can help save the planet this Earth Day

Little changes can make a big difference

By Rachel Feltman

Climate Change

Anyone can compost their food waste (and everyone should)

And it doesn’t have to smell.

By Claire Maldarelli

Military

China is building drone planes for its aircraft carriers

They’re robotics wingmen for China’s carrier pilots.

By Jeffrey Lin and P.W. Singer

Spiders

Rising temperatures are opening new territories for venomous creatures—including your backyard

Welcome to the neighborhood, fire ants! Sure is hot out today!

By Kate Baggaley

NASA

Can you pass the test NASA gave potential astronauts in 1958?

May John Glenn be with you.

By Eleanor Cummins

Life Skills

How to throw a punch

Without hurting yourself more than your opponent.

By Stan Horaczek

Environment

This year’s Lyrid meteor shower coincides with Earth Day, but light pollution is ruining the show

Light pollution makes it hard for many people to appreciate the stars.

By Sara Chodosh

Animals

These octopuses just wanted a safe place to lay their eggs, but now they’re doomed

Warmer isn't always better.

By Mary Beth Griggs

a doctor shines a light in a patient's eyes

Health

A new study on concussions and Parkinson’s provides one more reason to protect your noggin

Even a minor brain injury might raise your risk.

By Neel V. Patel

Ocean

There’s still time for us to save the Great Barrier Reef

Just how much trouble is coral in? The answer is complicated.

By Amelia Urry

Bees

Saving pollinators is about more than just honeybees

Wild insects are the most important and vulnerable pollinators.

By Philip Donkersley/The Conversation

Science

Watch SpaceX launch NASA’s new planet-hunting satellite

TESS is blasting off on Wednesday night.

By Mary Beth Griggs

Archaeology

Neolithic surgeons might have practiced their skull-drilling techniques on cows

Trepanation may not have been limited to humans.

By Sara Chodosh

Nutrition

We’re so close with dogs, even our poop looks similar

A new study finds that human and dog microbiomes have more in common than you might expect.

By Kat Eschner

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1,018 1,019 1,020 1,021 1,022 1,023 1,024 1,025 1,026 1,027 1,028 1,029 1,030 1,031 1,032 1,033 1,034 1,035 1,036 1,037 1,038 1,039 1,040 1,041 1,042 1,043 1,044 1,045 1,046 1,047 1,048 1,049 1,050 1,051 1,052 1,053 1,054 1,055 1,056 1,057 1,058 1,059 1,060 1,061 1,062 1,063 1,064 1,065 1,066 1,067 1,068 1,069 1,070 1,071 1,072 1,073 1,074 1,075 1,076 1,077 1,078 1,079 1,080 1,081 1,082 1,083 1,084 1,085 1,086 1,087 1,088 1,089 1,090 1,091 1,092 1,093 1,094 1,095 1,096 1,097 1,098 1,099 1,100 1,101 1,102 1,103 1,104 1,105 1,106 1,107 1,108 1,109 1,110 1,111 1,112 1,113 1,114 1,115 1,116 1,117 1,118 1,119 1,120 1,121 1,122 1,123 1,124 1,125 1,126 1,127 1,128 1,129 1,130 1,131 1,132 1,133 1,134 1,135 1,136 1,137 1,138 1,139 1,140 1,141 1,142 1,143 1,144 1,145 1,146 1,147 1,148 1,149 1,150 1,151 1,152 1,153 1,154 1,155 1,156 1,157 1,158 1,159 1,160 1,161 1,162 1,163 1,164 1,165 1,166 1,167 1,168 1,169 1,170 1,171 1,172 1,173 1,174 1,175 1,176 1,177 1,178 1,179 1,180 1,181 1,182 1,183 1,184 1,185 1,186 1,187 1,188 1,189 1,190 1,191 1,192 1,193 1,194 1,195 1,196 1,197 1,198 1,199 1,200 1,201 1,202 1,203 1,204 1,205 1,206 1,207 1,208 1,209 1,210 1,211 1,212 1,213 1,214 1,215 1,216 1,217 1,218 1,219 1,220 1,221 1,222 1,223 1,224 1,225 1,226 1,227 1,228 1,229 1,230 1,231 1,232 1,233 1,234 1,235 1,236 1,237 1,238 1,239 1,240 1,241 1,242 1,243 1,244 1,245 1,246 1,247 1,248 1,249 1,250 1,251 1,252 1,253 1,254 1,255 1,256 1,257 1,258 1,259 1,260 1,261 1,262 1,263 1,264 1,265 1,266 1,267 1,268 1,269 1,270 1,271 1,272 1,273 1,274 1,275 1,276 1,277 1,278 1,279 1,280 1,281 1,282 1,283 1,284 1,285 1,286 1,287 1,288 1,289 1,290 1,291 1,292 1,293 1,294 1,295 1,296 1,297 1,298 1,299 1,300 1,301 1,302 1,303 1,304 1,305 1,306 1,307 1,308 1,309 1,310 1,311 1,312 1,313 1,314 1,315 1,316 1,317 1,318 1,319 1,320 1,321 1,322 1,323 1,324 1,325 1,326 1,327 1,328 1,329 1,330 1,331 1,332 1,333 1,334 1,335 1,336 1,337 1,338 1,339 1,340 1,341 1,342 1,343 1,344 1,345 1,346 1,347 1,348 1,349 1,350 1,351 1,352 1,353 1,354 1,355 1,356 1,357 1,358 1,359 1,360 1,361 1,362 1,363 1,364 1,365 1,366 1,367 1,368

Read the latest articles from Popular Science (Page 901)

A lake full of algae will wreck more than your summer swimming plans

Want to take a Mensa intelligence test? Here are four practice questions

Can you pass the U.S. Army’s World War I-era intelligence test?

It’s not just Syria—chemical weapons still pose a global threat

Homeopathic and natural remedies aren’t the same thing—and only one of them is total nonsense

How to become a space tourist: 8 companies (almost) ready to launch

11 easy ways you can help save the planet this Earth Day

Anyone can compost their food waste (and everyone should)

China is building drone planes for its aircraft carriers

Rising temperatures are opening new territories for venomous creatures—including your backyard

Can you pass the test NASA gave potential astronauts in 1958?

How to throw a punch

This year’s Lyrid meteor shower coincides with Earth Day, but light pollution is ruining the show

These octopuses just wanted a safe place to lay their eggs, but now they’re doomed

A new study on concussions and Parkinson’s provides one more reason to protect your noggin

There’s still time for us to save the Great Barrier Reef

Saving pollinators is about more than just honeybees

Watch SpaceX launch NASA’s new planet-hunting satellite

Neolithic surgeons might have practiced their skull-drilling techniques on cows

We’re so close with dogs, even our poop looks similar

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