杏吧原创

Last Word

Man clicking his heels while mowing a lawn

This week鈥檚 new questions

When I use my petrol lawn mower, does it emit more carbon than the grass has captured? And if you heat a ceramic mug of water in the microwave then tap it with a steel spoon, the pitch is higher than before it went in. Why?

Regulars
cute miniature schnauzer dog among chamomile flowers; Shutterstock ID 167053673; purchase_order: -; job: -; client: -; other: -

Why do humans like flowers, and do other non-pollinators, too?

Regulars
Origami tetrahedrons background. Futuristic polygonal composition with copy space on the left side.; Shutterstock ID 384802414; purchase_order: -; job: -; client: -; other: -

Why are at least four faces required to make a flat 3D solid?

Regulars
Leopard gecko lizards on the rock, cute lizards that are easy to care for, eublepharis macularius, animal closeup; Shutterstock ID 2551815383; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

Regulars
2X5MEN6 Sisters (2-3, 6-7) eating ice cream

When we eat ice cream, does it cool us down or warm us up?

Regulars
Exposures of clocks, watches, Time-Pieces of various kinds and periods. Photograph ?? Santosh Verma

Why are there 60 seconds in a minute and 60 minutes in an hour? Part 2

Regulars
Quantum correlation- 3d rendered image of quantum entanglement. Abstract background. Quantum mechanics background. Atomic structure, large collider, CERN concept. Muon Spinning particle, muon g-2, Higgs boson light speed neon stripes abstract image. Collision of Particles in the Abstract Collider.

This week鈥檚 new questions

Regulars
dish wash interior with plates and glasses; Shutterstock ID 132556751; purchase_order: -; job: -; client: -; other: -

Why do plastic items stay wet for longer in the dishwasher?

Regulars
3BCKRT6 Open artificial model human body with lungs and heart

Why is the heart not in the centre of our body?

Regulars
2C0KN5C Funny husky dog in glasses lying on the grass in a summer park

This week鈥檚 new questions

Is shortsightedness found in other animals? And how big would an asteroid hitting Mars or the moon have to be to cause trouble on Earth?

Regulars

Should I accelerate when driving over hills or keep to a steady speed?

Regulars

Given Earth rotates, can I travel by waiting in midair? Part 2

Regulars

This week鈥檚 new questions

Regulars

Why are there 60 seconds in a minute and 60 minutes in an hour?

Regulars