User uhoh

3

35

votes

2

answers

10k

views

Why “Having chlorophyll without photosynthesis is actually very dangerous” and “like living with a bomb”?

photosynthesis

Sep 9 at 16:56 Alex Reynolds 2,250

5

35

votes

2

answers

3k

views

Is C. elegans always observed with precisely 302 neurons? Are there ever individual viable exceptions?

May 25 '18 at 0:26 tsttst 1,206

3

24

votes

1

answer

3k

views

Bird brain-eating Mantis - how does it crack the skull?

entomology predation

Jan 27 at 9:26 Community♦ 1

4

20

votes

1

answer

3k

views

How did the largest/longest dinosaurs hold their head and necks up?

muscles bio-mechanics dinosaurs

Aug 10 '17 at 18:08 iayork 12.5k

2

14

votes

1

answer

11k

views

Can plants produce oxygen at night (without light)?

biochemistry plant-physiology photosynthesis

May 9 '18 at 8:24 Community♦ 1

4

13

votes

1

answer

678

views

Are two colors (red + blue) necessary for LED grow lights, or would either color be sufficient?

botany plant-physiology photosynthesis light

Jul 22 '17 at 6:31 Emily G. Silvia 1

10

votes

1

answer

471

views

What kind of tree is this — why do its huge leaves change shape and “grow fingers”?

species-identification trees morphology

Dec 11 '17 at 18:26 Bryan Hanson 1,209

9

votes

1

answer

156

views

What are the sources of molecular hydrogen in human breath?

biochemistry respiration breathing

Mar 25 '19 at 11:30 uhoh 3,364

8

votes

1

answer

147

views

Identify this unusually-shaped, orange-colored fruit that grows in pairs?

species-identification botany fruit

Sep 19 at 17:16 Bryan Hanson 1,209

8

votes

2

answers

270

views

What are these four large snails doing?

behaviour gastropod

Mar 11 '19 at 15:22 Dr. Evenor 648

7

votes

1

answer

260

views

What kind of big bird is this seen walking around Taipei?

species-identification ornithology

Jun 14 '18 at 14:12 Johnny 1,344

6

votes

0

answers

197

views

Could being exposed to excess UV in the arctic lead to a human eye color change? If so, what is the mechanism?

human-eye uv melanin

Jan 19 at 6:23 Kathy B 1

2

6

votes

2

answers

8k

views

What causes “ear rumbling”?

physiology hearing human-ear

Aug 10 at 1:46 Bibi 1

2

6

votes

1

answer

216

views

Why did they expect Astronaut Scott Kelley's telomere shortening to accelerate? (they got longer!)

molecular-biology radiation telomere

Apr 19 at 1:49 Alex Reynolds 2,250

6

votes

1

answer

134

views

Is this a hawk, or an eagle?

species-identification ornithology

Jul 4 '18 at 13:51 Community♦ 1

6

votes

3

answers

222

views

DNA as a digital storage medium; sequences algorithmically avoided for safety reasons (or should be)?

biochemistry dna dna-sequencing safety

Jul 20 '17 at 7:23 uhoh 3,364

1

6

votes

1

answer

102

views

Don't understand figures in this citizen-science mosquito ID project

entomology statistics data infectious-diseases

May 19 '17 at 0:15 canadianer 15.6k

6

votes

1

answer

780

views

Are four-leaf clovers mutations, developmental errors, or something more complicated?

genetics botany mutations variant

Mar 31 '17 at 14:46 uhoh 3,364

3

6

votes

2

answers

321

views

Bacteria trapped in crystal inclusions found 'alive' after 50,000 years - what were they eating all that time?

biochemistry bacteriology chemosynthesis

Feb 25 '17 at 9:41 another 'Homo sapien' 13.5k

1

5

votes

0

answers

93

views

How much energy does a spider expend per day just waiting for its web to vibrate?

entomology metabolism arachnology energy-metabolism

Dec 9 at 4:03 uhoh 3,364

1

5

votes

1

answer

3k

views

Species identification; clusters of big plump red bugs in Taipei

species-identification zoology entomology

Sep 18 at 20:16 theforestecologist♦ 20.5k

5

votes

2

answers

246

views

Melatonin production, sleep, and “cyan light”; how might this finding be possible?

human-biology neuroscience vision sleep color

Aug 3 '18 at 20:12 De Novo 8,457

2

5

votes

1

answer

113

views

What are these little leaves growing on these other leaves? (plant growing near the ocean)

species-identification reproduction seeds

May 20 '18 at 13:04 NatWH 886

5

votes

2

answers

486

views

Why do soil bacteria produce nitrous oxide as a result of anhydrous ammonia fertilizer application?

bacteriology soil nitrogen-cycle

Oct 11 '17 at 17:09 Istrel 186

4

votes

2

answers

158

views

How exactly does alcohol solution kill or neutralize viruses?

epidemiology sterilisation

Feb 4 at 12:52 AliceD♦ 47.1k

1

4

votes

1

answer

63

views

Is it unusual for populations of archaea to be found living inside trees?

microbiology trees dendrology archaea

Jun 17 at 16:52 WYSIWYG 33.8k

4

votes

2

answers

192

views

Do these large spiders in Taiwan belong to different species?

species-identification arachnology

Apr 19 at 1:54 uhoh 3,364

4

votes

1

answer

429

views

How exactly do birds get drunk eating fruit? Fermentation should be anaerobic

ornithology behaviour fermentation

Jan 22 '19 at 3:04 Bryan Krause♦ 22.4k

4

votes

1

answer

316

views

Is this tall, white tree in central Australia a kind of Eucalyptus?

species-identification

Nov 12 '18 at 22:09 Aussie Paul 19

1

4

votes

1

answer

135

views

Why are “itch signals” transmitted so slowly from the skin to the human brain?

neuroscience neurophysiology central-nervous-system peripheral-nervous-system

Nov 22 '17 at 4:37 theforestecologist♦ 20.5k

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76 Questions

Why “Having chlorophyll without photosynthesis is actually very dangerous” and “like living with a bomb”?

Is C. elegans always observed with precisely 302 neurons? Are there ever individual viable exceptions?

Bird brain-eating Mantis - how does it crack the skull?

How did the largest/longest dinosaurs hold their head and necks up?

Can plants produce oxygen at night (without light)?

Are two colors (red + blue) necessary for LED grow lights, or would either color be sufficient?

What kind of tree is this — why do its huge leaves change shape and “grow fingers”?

What are the sources of molecular hydrogen in human breath?

Identify this unusually-shaped, orange-colored fruit that grows in pairs?

What are these four large snails doing?

What kind of big bird is this seen walking around Taipei?

Could being exposed to excess UV in the arctic lead to a human eye color change? If so, what is the mechanism?

What causes “ear rumbling”?

Why did they expect Astronaut Scott Kelley's telomere shortening to accelerate? (they got longer!)

Is this a hawk, or an eagle?

DNA as a digital storage medium; sequences algorithmically avoided for safety reasons (or should be)?

Don't understand figures in this citizen-science mosquito ID project

Are four-leaf clovers mutations, developmental errors, or something more complicated?

Bacteria trapped in crystal inclusions found 'alive' after 50,000 years - what were they eating all that time?

How much energy does a spider expend per day just waiting for its web to vibrate?

Species identification; clusters of big plump red bugs in Taipei

Melatonin production, sleep, and “cyan light”; how might this finding be possible?

What are these little leaves growing on these other leaves? (plant growing near the ocean)

Why do soil bacteria produce nitrous oxide as a result of anhydrous ammonia fertilizer application?

How exactly does alcohol solution kill or neutralize viruses?

Is it unusual for populations of archaea to be found living inside trees?

Do these large spiders in Taiwan belong to different species?

How exactly do birds get drunk eating fruit? Fermentation should be anaerobic

Is this tall, white tree in central Australia a kind of Eucalyptus?

Why are “itch signals” transmitted so slowly from the skin to the human brain?