There are 76 nominated projects competing to be crowned Design of the Year 2015. Here we showcase 20 of the finalists.
All finalists' details are on show at London's Design Museum with the overall winner announced in June. Curator Gemma Curtin provides video narration.
Got a pregnant cow? Want to know when calving might start?
The bright green Moocall aims to help.
The sensor clips to the animal's tail - and alerts farmers by text message.
The Current Table, below, combines stylish design with technology - because it can charge phones, tablets and computers.
The glass table surface contains a special solar cell which creates an electrical current.
It means that the cell doesn't need direct sunlight to work, and can rely on diffused light instead.
The importance of coding is currently being widely emphasised, and this kit from Kano tries to help people understand more than just computer software.
Project Daniel is the world's first 3D-printing prosthetic lab.
The founder, Mick Ebeling, tracked down Sudanese teenager - Daniel Omar - who lost both his arms when a bomb went off while he was tending cattle.
Two 3D printers have since been left in the local hospital so more people can receive artificial limbs - for a cost price of about $100.
This billboard in Peru below might look ordinary - but it is actually hard at work attracting and filtering pollution from the sky.
It then returns purified air to the local atmosphere at a rate of 100,000 cubic metres per day.
It would take 1,200 mature trees to do the same.
There are eight fashion finalists - and one of them is Ann-Sofie Back.
Her work is noticeable for its accentuated waists, giant safety pin detailing, and "naively fringed" denim.
This building looks like it has been there for generations - but it is the new Sancaklar Mosque in Istanbul.
The designers Emre Arolat Architects were inspired by the fact that a mosque does not have a predefined form, and that anywhere clean may be a prayer room.
Located in the centre of Rotterdam, Markthal is a new covered food market in the Netherlands.
There are also 228 apartments - each with windows or glass floors made of sound-proof, and smell-proof, triple glazing.
Seeming, in part, to defy gravity - the towers of the One Central Park project have transformed Sydney's skyline.
A vertical landscape garden, designed in collaboration with French artist and botanist Patrick Blanc, covers much of the buildings' facades.
The Foundation Louis Vuitton is in Paris.
Housing an art collection and hosting concerts, it is a "glass cloud" of 12 curved sails that emerge from the Bois de Boulogne.
More than 3,000 curved glass panels were used in construction.
This photo was taken at the Waterbank Campus at Endana Secondary School in Laikipia, Kenya. Each building at the school harvests rainwater.
The football stadium seating - with the rear of the structure shown here - is no exception.
The Ocean Cleanup is inspired by Dutch environmentalist Boyan Slat - who, at the age of 16, encountered more plastic bags than fish in the waters off Greece.
It's a proposal for a network of floating barriers which cause natural currents to push plastics towards a central platform - to then be removed from the water.
These lampshades have been "grown".
Created by Ecovative, they are made out of high-performing biocomposite material - which uses fungal mycelium, the root-like structure of a mushroom.
It means that agricultural waste products can be glued together into products - which can then be returned to the soil as a nutrient at the end of their useful lives.
As in previous years, the nominees in the transport section are focused mainly on eco-production and efficiency.
The i8 plug-in hybrid from BMW claims to have increased efficiency due to its lightweight construction.
And although it may look a little less sporty, the key thing about this car from Google is that it can drive itself.
Loopwheels are designed to give bicycle and wheelchair users a smoother ride.
They have suspension built in, with a spring system made of three loops.
The loops - made from carbon composite material - replace conventional spokes.
In Spring 2014, Norges Bank (Norway's Central Bank) held a competition to design new banknotes - communicating the theme "The Sea".
In the end, two designers' entries were chosen.
Metric Design provided more traditional artwork for one side of each note.
And Snohetta Design used more modern pixel motifs.
Designs of the Year 2015 is at the Design Museum London until 23 August.